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A pixel circuit, an organic electroluminescent display panel, and a display device

A pixel circuit and light-emitting module technology, applied in optics, static indicators, nonlinear optics, etc., can solve the problems of complex circuit structure, heavy display screen, and high production cost

Active Publication Date: 2016-07-06
HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing built-in touch screen OLED display panel, the circuits generally used to realize the display drive and touch drive are designed separately, that is, one set of circuits is used to realize the touch function, and the other set of circuits is used to realize the OLED display panel. The display driving function, and the display driving circuit and the touch circuit are set separately, there will be disadvantages such as complicated circuit structure, high production cost, heavy and thick display screen

Method used

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  • A pixel circuit, an organic electroluminescent display panel, and a display device
  • A pixel circuit, an organic electroluminescent display panel, and a display device
  • A pixel circuit, an organic electroluminescent display panel, and a display device

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Embodiment 1

[0057] Example 1: Combining Figure 2a The pixel circuit shown as well as Figure 3a shown Figure 2a The input and output timing diagrams describe the working process of the pixel circuit provided by the embodiment of the present invention. Specifically, choose the Figure 3a There are seven stages of t1-t7 in the input and output sequence diagram shown. In the following description, 1 represents a high-level signal, and 0 represents a low-level signal.

[0058] In the t1 stage, CT1=1, CT2=1, CT3=0, CT4=0, CT5=1, Scan=1, Ref1=Vini, Ref2=0, Data=VL. Because CT1=1, CT2=1, CT5=1, Scan=1, so the first switch transistor T1, the second switch transistor T2, the third switch transistor T3 and the sixth switch transistor T6 conduction; Because CT3=0, CT4 =0, so the fourth switching transistor T4 and the fifth switching transistor T5 are turned off. The turned-on sixth switch transistor T6 conducts the drain of the driving transistor D1 with the second reference signal terminal ...

Embodiment 2

[0066] Embodiment 2: Combination Figure 2c The pixel circuit shown as well as Figure 3b shown Figure 2c The input and output timing diagrams describe the working process of the pixel circuit provided by the embodiment of the present invention. Specifically, choose the Figure 3b There are seven stages of t1-t7 in the input and output sequence diagram shown. In the following description, 1 represents a high-level signal, and 0 represents a low-level signal.

[0067]In the t1 stage, CT1=0, CT2=0, CT3=1, CT4=1, CT5=0, Scan=0, Ref1=Vini, Ref2=1, Data=VL. Because CT1=0, CT2=0, CT5=0, Scan=0, so the first switch transistor T1, the second switch transistor T2, the third switch transistor T3 and the sixth switch transistor T6 conduction; Because CT3=1, CT4 =1, so the fourth switching transistor T4 and the fifth switching transistor T5 are turned off. The turned-on sixth switch transistor T6 conducts the drain of the driving transistor D1 with the second reference signal termi...

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Abstract

The present disclosure provides a pixel circuit, an organic electroluminescence display panel and a display apparatus. The pixel circuit initializes a first node during an initialization period of a touch control phase and a display phase; adjusts a voltage at the first node during a touch sensing period of the touch control phase; causes a driver module to output a touch control signal under the control of the voltage at the first node during a touch reading period of the touch control phase, so as to achieve a touch control function; writes data into the first node during a compensating period and a data writing period of the display phase; and causes the driver module to drive a light emitting device in a light emitting module to emit light during a light emitting period of the display phase, so as to allow the light emitting device to achieve its light emitting function normally. Compared with the conventional pixel circuit, the pixel circuit according to the embodiment of the present disclosure has integrated touch control and display functions. In this way, the manufacture cost can be saved when compared with the separated provided display driver circuit and touch control circuit, so as to simplify the circuit structure and to reduce the thickness of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit, an organic electroluminescence display panel and a display device. Background technique [0002] With the advancement of display technology, organic light-emitting display (OLED, Organic Light Emitting Diode) is one of the hot spots in the field of flat panel display research today, and more and more active matrix organic light-emitting diode (AMOLED, ActiveMatrixOrganicLightEmittingDiode) display panels have entered the market, compared with traditional Advanced thin film transistor liquid crystal display panel (TFTLD, ThinFilmTransistorLiquidCrystalDisplay), AMOLED has faster response speed, higher contrast ratio and wider viewing angle. [0003] At present, as display devices are developing toward thinner, higher-resolution, intelligent, and energy-saving devices, touch screen panels (Touch Screen Panels) are more and more widely used. At present, the realiz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG06F3/0412G06F3/04184G06F3/042G06F3/044G09G3/3258G09G2300/0809G09G2300/0842G09G2310/08G09G2360/147G09G2360/148G02F1/13338G06F3/0416
Inventor 胡祖权
Owner HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD