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TWI852604B - Pixel circuit and display panel using the same - Google Patents

  • ️Sun Aug 11 2024

TWI852604B - Pixel circuit and display panel using the same - Google Patents

Pixel circuit and display panel using the same Download PDF

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Publication number
TWI852604B
TWI852604B TW112120876A TW112120876A TWI852604B TW I852604 B TWI852604 B TW I852604B TW 112120876 A TW112120876 A TW 112120876A TW 112120876 A TW112120876 A TW 112120876A TW I852604 B TWI852604 B TW I852604B Authority
TW
Taiwan
Prior art keywords
circuit
transistor
light
coupled
write
Prior art date
2023-06-05
Application number
TW112120876A
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Chinese (zh)
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TW202449754A (en
Inventor
王澄光
邱敏軒
林宣穎
鄭瑋銘
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友達光電股份有限公司
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2023-06-05
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2023-06-05
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2024-08-11
2023-06-05 Application filed by 友達光電股份有限公司 filed Critical 友達光電股份有限公司
2023-06-05 Priority to TW112120876A priority Critical patent/TWI852604B/en
2023-10-31 Priority to CN202311432639.2A priority patent/CN117351875A/en
2024-08-11 Application granted granted Critical
2024-08-11 Publication of TWI852604B publication Critical patent/TWI852604B/en
2024-12-16 Publication of TW202449754A publication Critical patent/TW202449754A/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3266—Details of drivers for scan electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application discloses a pixel circuit and a display panel using the same. The pixel circuit is coupled to a control circuit. The pixel circuit includes: a write circuit for receiving a data signal and a gate control circuit; a driving circuit coupled to the write circuit; and a light emission element coupled to the driving circuit. In a data write phase, the gate control signal conducts the write circuit, the data signal writes into the driving circuit via the write circuit, an emission control signal turns off the control circuit and the light emission element does not emit light. In an emission phase, the gate control signal turns off the write circuit, the emission control signal turns on the control circuit and the light emission element emits light.

Description

畫素電路及應用其之顯示面板 Pixel circuit and display panel using the same

本發明是有關於一種畫素電路及應用其之顯示面板。 The present invention relates to a pixel circuit and a display panel using the same.

Micro LED(微型LED)由於晶粒小，因此在彎曲、延展等性能上較佳。另外，微型LED面板也會因為能容納更多小晶粒而具備高解析、透明度高等優點。此外，單一顆Micro LED即已具有高亮度，也能達到省電效果。 Micro LED has better performance in bending and extension due to its small crystal size. In addition, Micro LED panels also have advantages such as high resolution and high transparency because they can accommodate more small crystals. In addition, a single Micro LED has high brightness and can also achieve power saving effects.

然而，為了讓Micro LED顯示面板的性能提昇，如何增加開口率進而提高影像清晰度乃是業界努力方向之一。 However, in order to improve the performance of Micro LED display panels, how to increase the aperture ratio and thus improve image clarity is one of the directions the industry is working on.

根據本案一方面，提出一種畫素電路，耦接至一控制電路，該畫素電路包括：一寫入電路，接收一資料信號與一閘極控制信號；一驅動電路，耦接至該寫入電路；以及一發光元件，耦接至該驅動電路。於一資料寫入階段內，該閘極控制信號導通該寫入電路，該資料信號透過該寫入電路寫入到該驅動電路，一發光控制信號使得該控制電路為關閉，且該發光元件不發光；以 及於一發光階段內，該閘極控制信號使得該寫入電路關閉，該發光控制信號使得該控制電路導通，使得該發光元件發光。 According to one aspect of the present invention, a pixel circuit is provided, which is coupled to a control circuit. The pixel circuit includes: a write circuit, which receives a data signal and a gate control signal; a drive circuit, which is coupled to the write circuit; and a light-emitting element, which is coupled to the drive circuit. In a data write phase, the gate control signal turns on the write circuit, the data signal is written to the drive circuit through the write circuit, and a light-emitting control signal turns off the control circuit, and the light-emitting element does not emit light; and in a light-emitting phase, the gate control signal turns off the write circuit, and the light-emitting control signal turns on the control circuit, so that the light-emitting element emits light.

根據本案另一方面，提出一種顯示面板，包括：一主動區，包括複數個畫素電路，各該些畫素電路包括：一寫入電路接收複數個資料信號之一與複數個閘極控制信號之一，一驅動電路耦接至該寫入電路，以及一發光元件耦接至該驅動電路；以及至少一控制電路，耦接至該主動區，該些畫素電路共享該至少一控制電路。於一資料寫入階段內，該些閘極控制信號導通該些畫素電路之該些寫入電路，該些資料信號透過該些畫素電路之該些寫入電路依序寫入到該些畫素電路之該些驅動電路，一發光控制信號使得該至少一控制電路為關閉，且該些畫素電路之該些發光元件不發光；以及於一發光階段內，該些閘極控制信號使得該些畫素電路之該些寫入電路關閉，該發光控制信號使得該至少一控制電路導通，使得該些畫素電路之該些發光元件發光。 According to another aspect of the present invention, a display panel is proposed, comprising: an active area, comprising a plurality of pixel circuits, each of the pixel circuits comprising: a write circuit receiving one of a plurality of data signals and one of a plurality of gate control signals, a drive circuit coupled to the write circuit, and a light-emitting element coupled to the drive circuit; and at least one control circuit coupled to the active area, the pixel circuits sharing the at least one control circuit. In a data writing phase, the gate control signals turn on the write circuits of the pixel circuits, the data signals are sequentially written to the drive circuits of the pixel circuits through the write circuits of the pixel circuits, a light emitting control signal turns off the at least one control circuit, and the light emitting elements of the pixel circuits do not emit light; and in a light emitting phase, the gate control signals turn off the write circuits of the pixel circuits, the light emitting control signal turns on the at least one control circuit, and the light emitting elements of the pixel circuits emit light.

為了對本發明之上述及其他方面有更佳的瞭解，下文特舉實施例，並配合所附圖式詳細說明如下： In order to better understand the above and other aspects of the present invention, the following is a specific example and a detailed description with the attached drawings as follows:

100:畫素電路 100: Pixel circuit

110:寫入電路 110: Write circuit

120:驅動電路 120: Drive circuit

130:檢測電路 130: Detection circuit

C:電容 C: Capacitor

140:發光元件 140: Light-emitting element

150:控制電路 150: Control circuit

T1~T4:電晶體 T1~T4: Transistor

200:顯示面板 200: Display panel

210:主動區 210: Active zone

220:畫素電路 220: Pixel circuit

P1~P2:階段 P1~P2: Phase

第1圖繪示根據本案一實施例的畫素電路的功能方塊及電路圖。 Figure 1 shows the functional blocks and circuit diagram of a pixel circuit according to an embodiment of the present invention.

第2圖顯示根據本案一實施例之顯示面板之示意圖。 Figure 2 shows a schematic diagram of a display panel according to an embodiment of the present invention.

第3圖顯示顯示根據本案一實施例之顯示面板之操作示意 圖。 Figure 3 shows a schematic diagram of the operation of a display panel according to an embodiment of the present invention.

本說明書的技術用語係參照本技術領域之習慣用語，如本說明書對部分用語有加以說明或定義，該部分用語之解釋係以本說明書之說明或定義為準。本揭露之各個實施例分別具有一或多個技術特徵。在可能實施的前提下，本技術領域具有通常知識者可選擇性地實施任一實施例中部分或全部的技術特徵，或者選擇性地將這些實施例中部分或全部的技術特徵加以組合。 The technical terms in this specification refer to the customary terms in this technical field. If this specification explains or defines some terms, the interpretation of these terms shall be based on the explanation or definition in this specification. Each embodiment disclosed in this disclosure has one or more technical features. Under the premise of possible implementation, a person with ordinary knowledge in this technical field can selectively implement part or all of the technical features in any embodiment, or selectively combine part or all of the technical features in these embodiments.

第1圖繪示根據本案一實施例的畫素電路的功能方塊及電路圖。根據本案一實施例的畫素電路100可應用於，例如但不受限於，微型LED顯示面板。根據本案一實施例的畫素電路100包括：寫入電路110、驅動電路120、檢測電路130、電容C與發光元件140。其中，檢測電路130是選擇性元件。本案一實施例的畫素電路100耦接至顯示面板的控制電路150。 FIG. 1 shows the functional blocks and circuit diagram of a pixel circuit according to an embodiment of the present invention. The pixel circuit 100 according to an embodiment of the present invention can be applied to, for example but not limited to, a micro LED display panel. The pixel circuit 100 according to an embodiment of the present invention includes: a writing circuit 110, a driving circuit 120, a detection circuit 130, a capacitor C and a light-emitting element 140. Among them, the detection circuit 130 is a selective element. The pixel circuit 100 of an embodiment of the present invention is coupled to a control circuit 150 of a display panel.

寫入電路110包括例如但不受限於，電晶體T1。電晶體T1具有：一第一端接收資料信號DATA，一第二端，以及一控制端接收閘極控制信號SN。 The write circuit 110 includes, for example but not limited to, a transistor T1. The transistor T1 has: a first terminal for receiving a data signal DATA, a second terminal, and a control terminal for receiving a gate control signal SN.

驅動電路120耦接至寫入電路110。驅動電路120包括例如但不受限於，電晶體T2。電晶體T2具有：一第一端接收操作電壓VDD，一第二端，以及一控制端耦接至電晶體T1的第二端。 The driving circuit 120 is coupled to the writing circuit 110. The driving circuit 120 includes, for example but not limited to, a transistor T2. The transistor T2 has: a first terminal receiving an operating voltage VDD, a second terminal, and a control terminal coupled to the second terminal of the transistor T1.

檢測電路130耦接至驅動電路120。檢測電路130 包括例如但不受限於，電晶體T3。電晶體T3具有：一第一端接收資料信號DATA，一第二端，以及一控制端接收測試信號AT。 The detection circuit 130 is coupled to the driving circuit 120. The detection circuit 130 includes, for example but not limited to, a transistor T3. The transistor T3 has: a first terminal for receiving a data signal DATA, a second terminal, and a control terminal for receiving a test signal AT.

電容C耦接至驅動電路120。電容C耦接於操作電壓VDD與電晶體T1的第二端之間，或者說，電容C耦接於電晶體T2的第一端與電晶體T2的控制端之間，用以穩定電晶體T2的閘極-源極電壓。此外，電容C用於儲存資料信號DATA。 Capacitor C is coupled to the driving circuit 120. Capacitor C is coupled between the operating voltage VDD and the second end of transistor T1, or in other words, capacitor C is coupled between the first end of transistor T2 and the control end of transistor T2 to stabilize the gate-source voltage of transistor T2. In addition, capacitor C is used to store data signal DATA.

發光元件140耦接至驅動電路120。發光元件140包括LED，例如但不受限於，micro LED。發光元件140的LED耦接於電晶體T2的第二端與一端點VSS’之間。 The light-emitting element 140 is coupled to the driving circuit 120. The light-emitting element 140 includes an LED, such as but not limited to a micro LED. The LED of the light-emitting element 140 is coupled between the second end of the transistor T2 and a terminal VSS’.

控制電路150耦接至發光元件140。控制電路150包括例如但不受限於，電晶體T4。電晶體T4具有：一第一端耦接至接地端VSS，一第二端耦接至發光元件140的LED，以及一控制端接收發光控制信號EM。 The control circuit 150 is coupled to the light-emitting element 140. The control circuit 150 includes, for example but not limited to, a transistor T4. The transistor T4 has: a first end coupled to the ground end VSS, a second end coupled to the LED of the light-emitting element 140, and a control end receiving a light-emitting control signal EM.

在本案一實施例中，畫素電路100有2個操作階段：資料寫入階段(第一階段)與發光階段(第二階段)。電晶體T3是檢測用，不論在資料寫入階段(第一階段)與發光階段(第二階段)，電晶體T3都是關閉。在檢測階段，電晶體T3被導通。 In an embodiment of the present case, the pixel circuit 100 has two operation stages: the data writing stage (first stage) and the light emitting stage (second stage). Transistor T3 is used for detection. Regardless of the data writing stage (first stage) or the light emitting stage (second stage), transistor T3 is turned off. In the detection stage, transistor T3 is turned on.

於資料寫入階段(第一階段)內，閘極控制信號SN導通電晶體T1，故而，資料信號DATA透過電晶體T1寫入到電晶體T2的控制端，此時的發光控制信號EM使得電晶體T4為關閉，而測試信號AT使得電晶體T3也是關閉，而電晶體T2是導通或關閉則由資料信號DATA決定，但由於電晶體T4是關閉， 所以，發光元件140的LED此時不會發光。 In the data writing phase (first phase), the gate control signal SN turns on transistor T1, so the data signal DATA is written to the control end of transistor T2 through transistor T1. At this time, the light control signal EM turns off transistor T4, and the test signal AT turns off transistor T3. Whether transistor T2 is turned on or off is determined by the data signal DATA, but since transistor T4 is turned off, the LED of the light-emitting element 140 will not emit light at this time.

於發光階段(第二階段)內，閘極控制信號SN使得電晶體T1關閉，而測試信號AT使得電晶體T3也是關閉的，發光控制信號EM使得電晶體T4導通，電晶體T2會導通，使得發光元件140的LED發光(有電流通過)。 In the light-emitting phase (second phase), the gate control signal SN turns off transistor T1, and the test signal AT turns off transistor T3. The light-emitting control signal EM turns on transistor T4, and transistor T2 turns on, so that the LED of the light-emitting element 140 emits light (current flows).

第2圖顯示根據本案一實施例之顯示面板之示意圖。如第2圖所示，根據本案一實施例之顯示面板200包括：主動區210與至少一控制電路150。雖然第2圖只顯示2個控制電路150，但本案並不受限於此。 FIG. 2 shows a schematic diagram of a display panel according to an embodiment of the present invention. As shown in FIG. 2, a display panel 200 according to an embodiment of the present invention includes: an active area 210 and at least one control circuit 150. Although FIG. 2 only shows two control circuits 150, the present invention is not limited thereto.

主動區210包括複數個畫素電路220。該些畫素電路220排成矩陣。相較於第1圖的畫素電路100，第2圖的畫素電路220少了檢測電路130。故而，第2圖的畫素電路220的電路架構及其詳細說明在此可以省略。於第2圖中，畫素電路220的電晶體T1的控制端(閘極)乃是接收閘極控制信號Gate 1~Gate n之一，而畫素電路220的電晶體T1的第一端乃是接收資料信號Data 1~Data n之一。 The active area 210 includes a plurality of pixel circuits 220. The pixel circuits 220 are arranged in a matrix. Compared with the pixel circuit 100 in FIG. 1, the pixel circuit 220 in FIG. 2 lacks the detection circuit 130. Therefore, the circuit structure of the pixel circuit 220 in FIG. 2 and its detailed description can be omitted here. In FIG. 2, the control end (gate) of the transistor T1 of the pixel circuit 220 receives one of the gate control signals Gate 1~Gate n, and the first end of the transistor T1 of the pixel circuit 220 receives one of the data signals Data 1~Data n.

由於檢測電路130是選擇性元件，在本案其他可能實施例中，主動區210所包括的複數個畫素電路也可以實質上相同於第1圖的畫素電路100(亦即包括檢測電路130)，此皆在本案精神範圍內。 Since the detection circuit 130 is a selective component, in other possible embodiments of the present invention, the plurality of pixel circuits included in the active area 210 may also be substantially the same as the pixel circuit 100 in FIG. 1 (i.e., including the detection circuit 130), which is within the spirit of the present invention.

該些畫素電路220共享該至少一控制電路150。 The pixel circuits 220 share the at least one control circuit 150.

第3圖顯示顯示根據本案一實施例之顯示面板之操 作示意圖。 Figure 3 shows a schematic diagram of the operation of a display panel according to an embodiment of the present invention.

於資料寫入階段(第一階段)P1內，閘極控制信號Gate 1~Gate n導通該些畫素電路之該些電晶體T1，故而，資料信號Data 1~Data n依序透過該些畫素電路之該些電晶體T1寫入到該些畫素電路之該些電晶體T2的控制端，故而，該些畫素電路之該些電晶體T2的該些控制端電壓VG1n~VGnn分別受到資料信號Data 1~Data n的影響。此外，於資料寫入階段(第一階段)P1內，此時的發光控制信號EM使得該至少一控制電路150之該至少一電晶體T4為關閉。由於該至少一控制電路150之電晶體T4是關閉的，所以，該些畫素電路220的該些發光元件的LED此時不會發光。 In the data writing phase (first phase) P1, the gate control signals Gate 1 to Gate n turn on the transistors T1 of the pixel circuits, so the data signals Data 1 to Data n are sequentially written into the control ends of the transistors T2 of the pixel circuits through the transistors T1 of the pixel circuits, so the control end voltages VG1n to VGnn of the transistors T2 of the pixel circuits are respectively affected by the data signals Data 1 to Data n. In addition, in the data writing phase (first phase) P1, the light emitting control signal EM at this time turns off the at least one transistor T4 of the at least one control circuit 150. Since the transistor T4 of the at least one control circuit 150 is turned off, the LEDs of the light-emitting elements of the pixel circuits 220 will not emit light at this time.

於發光階段(第二階段)內，閘極控制信號Gate 1~Gate n使得該些畫素電路220之該些電晶體T1關閉，發光控制信號EM使得該至少一控制電路150之電晶體T4導通，使得該些畫素電路220之發光元件的LED發光(有電流通過)。 In the light-emitting phase (second phase), the gate control signals Gate 1~Gate n turn off the transistors T1 of the pixel circuits 220, and the light-emitting control signal EM turns on the transistor T4 of the at least one control circuit 150, so that the LEDs of the light-emitting elements of the pixel circuits 220 emit light (current flows).

由上述可知，在本案一實施例的畫素電路及應用其之顯示面板中，由於主動區可以大幅減少所需的走線，開口率可以得到提昇(例如，可以提昇12%)，進而提高顯示影像的清晰度。 From the above, it can be seen that in the pixel circuit of an embodiment of the present case and the display panel using the same, since the active area can significantly reduce the required wiring, the opening rate can be improved (for example, it can be improved by 12%), thereby improving the clarity of the displayed image.

綜上所述，雖然本發明已以實施例揭露如上，然其並非用以限定本發明。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。因此，本發明之保護範圍當視後附之申請專利範圍所界定者為準。 In summary, although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Those with common knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined in the attached patent application.

100:畫素電路 100: Pixel circuit

110:寫入電路 110: Write circuit

120:驅動電路 120: Drive circuit

130:檢測電路 130: Detection circuit

C:電容 C: Capacitor

140:發光元件 140: Light-emitting element

150:控制電路 150: Control circuit

T1~T4:電晶體 T1~T4: Transistor

Claims (2)

一種畫素電路，耦接至一控制電路，該畫素電路包括：一寫入電路，接收一資料信號與一閘極控制信號；一驅動電路，耦接至該寫入電路；以及一發光元件，耦接至該驅動電路，其中，於一資料寫入階段內，該閘極控制信號導通該寫入電路，該資料信號透過該寫入電路寫入到該驅動電路，一發光控制信號使得該控制電路為關閉，且該發光元件不發光；以及於一發光階段內，該閘極控制信號使得該寫入電路關閉，該發光控制信號使得該控制電路導通，使得該發光元件發光；其中，該寫入電路包括一第一電晶體，該第一電晶體具有：一第一端接收該資料信號，一第二端，以及一控制端接收該閘極控制信號；該驅動電路包括一第二電晶體，該第二電晶體具有：一第一端接收一操作電壓，一第二端，以及一控制端耦接至該第一電晶體的該第二端；以及該發光元件包括一微型LED，該微型LED耦接於該第二電晶體的該第二端與一端點之間；該畫素電路更包括： 一檢測電路，耦接至該驅動電路，該檢測電路包括一第三電晶體，該第三電晶體具有：一第一端接收該資料信號，一第二端，以及一控制端接收一測試信號，於一檢測階段，該檢測電路被導通；以及一電容，耦接於該操作電壓與該第一電晶體的該第二端之間，用以穩定該第二電晶體的一閘極-源極電壓，且該電容用於儲存該資料信號。 A pixel circuit is coupled to a control circuit, the pixel circuit comprising: a write circuit receiving a data signal and a gate control signal; a drive circuit coupled to the write circuit; and a light-emitting element coupled to the drive circuit, wherein, in a data write phase, the gate control signal turns on the write circuit, the data signal is written into the drive circuit through the write circuit, and a light-emitting element is turned on by the gate control signal. The gate control signal turns the control circuit off and the light-emitting element does not emit light; and in a light-emitting phase, the gate control signal turns the write circuit off, and the light-emitting control signal turns the control circuit on, so that the light-emitting element emits light; wherein the write circuit includes a first transistor, the first transistor having: a first end receiving the data signal, a second end, and a control end receiving the gate control signal; the drive circuit includes a second transistor, the second transistor having: a first end receiving an operating voltage, a second end, and a control end coupled to the second end of the first transistor; and the light-emitting element includes a micro LED, the micro LED is coupled between the second end and a terminal of the second transistor; the pixel circuit further includes: a detection circuit coupled to the drive circuit, the The detection circuit includes a third transistor, which has: a first terminal for receiving the data signal, a second terminal, and a control terminal for receiving a test signal. In a detection phase, the detection circuit is turned on; and a capacitor coupled between the operating voltage and the second terminal of the first transistor to stabilize a gate-source voltage of the second transistor, and the capacitor is used to store the data signal. 一種顯示面板，包括：一主動區，包括複數個畫素電路，各該些畫素電路包括：一寫入電路接收複數個資料信號之一與複數個閘極控制信號之一，一驅動電路耦接至該寫入電路，以及一發光元件耦接至該驅動電路；以及至少一控制電路，耦接至該主動區，該些畫素電路共享該至少一控制電路，其中，於一資料寫入階段內，該些閘極控制信號導通該些畫素電路之該些寫入電路，該些資料信號透過該些畫素電路之該些寫入電路依序寫入到該些畫素電路之該些驅動電路，一發光控制信號使得該至少一控制電路為關閉，且該些畫素電路之該些發光元件不發光；以及 於一發光階段內，該些閘極控制信號使得該些畫素電路之該些寫入電路關閉，該發光控制信號使得該至少一控制電路導通，使得該些畫素電路之該些發光元件發光；其中，對於各該些畫素電路，該寫入電路包括一第一電晶體，該第一電晶體具有：一第一端接收該些資料信號之一，一第二端，以及一控制端接收該些閘極控制信號之一；該驅動電路包括一第二電晶體，該第二電晶體具有：一第一端接收一操作電壓，一第二端，以及一控制端耦接至該第一電晶體的該第二端；以及該發光元件包括一微型LED，該微型LED耦接於該第二電晶體的該第二端與一端點之間；各該些畫素電路更包括：一檢測電路，耦接至該驅動電路，該檢測電路包括一第三電晶體，該第三電晶體具有：一第一端接收該些資料信號之一，一第二端，以及一控制端接收一測試信號，於一檢測階段，該檢測電路被導通；以及一電容，耦接於該操作電壓與該第一電晶體的該第二端之間，用以穩定該第二電晶體的一閘極-源極電壓，且該電容用於儲存該些資料信號之一。 A display panel includes: an active area including a plurality of pixel circuits, each of the pixel circuits includes: a write circuit receiving one of a plurality of data signals and one of a plurality of gate control signals, a drive circuit coupled to the write circuit, and a light-emitting element coupled to the drive circuit; and at least one control circuit coupled to the active area, the pixel circuits share the at least one control circuit, wherein in a data write phase, the gate control signals turn on the write circuits of the pixel circuits, The data signals are sequentially written into the driving circuits of the pixel circuits through the write circuits of the pixel circuits, a light-emitting control signal turns off the at least one control circuit, and the light-emitting elements of the pixel circuits do not emit light; and In a light-emitting phase, the gate control signals turn off the write circuits of the pixel circuits, the light-emitting control signal turns on the at least one control circuit, and the light-emitting elements of the pixel circuits emit light; wherein, for each of the pixel circuits, The write circuit includes a first transistor, the first transistor having: a first end receiving one of the data signals, a second end, and a control end receiving one of the gate control signals; the drive circuit includes a second transistor, the second transistor having: a first end receiving an operating voltage, a second end, and a control end coupled to the second end of the first transistor; and the light-emitting element includes a micro LED, the micro LED is coupled between the second end of the second transistor and a terminal Each of the pixel circuits further includes: a detection circuit coupled to the driving circuit, the detection circuit includes a third transistor, the third transistor has: a first end receiving one of the data signals, a second end, and a control end receiving a test signal, in a detection phase, the detection circuit is turned on; and a capacitor coupled between the operating voltage and the second end of the first transistor to stabilize a gate-source voltage of the second transistor, and the capacitor is used to store one of the data signals.

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