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In cell touch display screen, driving method thereof and display device

A touch display, embedded technology, applied in static indicators, instruments, semiconductor devices, etc., can solve the problems of high production cost, low light transmittance, thick modules, etc.

Active Publication Date: 2015-09-09
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the plug-in touch screen is produced separately from the touch screen and the display screen, and then bonded together to form a display screen with touch function. The plug-in touch screen has disadvantages such as high production cost, low light transmittance, and thick modules.

Method used

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  • In cell touch display screen, driving method thereof and display device
  • In cell touch display screen, driving method thereof and display device
  • In cell touch display screen, driving method thereof and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] In the first stage T1 (reset charging stage), Scan1=0, Scan2=0, Scan3=1, EM1=0.

[0099] Such as Figure 5a As shown, the first switching transistor T1, the second switching transistor T2, the third switching transistor T3 and the fifth switching transistor T5 are in the on state, the fourth switching transistor T4 and the driving transistor DT0 are in the off state; the first reference signal terminal VDD The first reference signal is transmitted to the second node B through the turned-on fifth switching transistor T5, so that the potential of the second node B is the potential V of the first reference signal dd , the second reference signal at the second reference signal terminal Vint is transmitted to the third node C through the turned-on second switching transistor T2, so that the potential of the third node C is the potential V of the second reference signal ss , the capacitor C1 starts charging, and the second reference signal at the second reference signal term...

Embodiment 2

[0130] Take a sub-pixel as an example, such as Figure 8 As shown, the array substrate 1 sequentially includes a buffer layer 221, an active layer 222, a gate insulating layer 223, a gate 224, an interlayer insulating layer 225, a source electrode 226, a drain electrode 227, and a wire 110 arranged on the same layer. layer 228, the anode layer 211 and the cathode connection part 214, the light emitting layer 212, the sub-pixel defining layer 215 surrounding the light emitting layer 212, and the cathode layer 213.

[0131] Wherein, the cathode layer 213 is connected to the cathode connection part 214 through the via hole penetrating the sub-pixel defining layer 215, the anode layer 211 is connected to the drain electrode 227 through the via hole penetrating the planarization layer 228, and the cathode connection part 214 is connected to the drain electrode 227 through the The via hole is connected to the wire 110, the source electrode 226 and the drain electrode 227 are respect...

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Abstract

The invention discloses an in cell touch display screen, a driving method of the in cell touch display screen and a display device. Every sub-pixel set consists of at least two sub-pixels, cathode layers of different sub-pixel sets are independent from each other, namely, a cathode layer which is arranged on the whole surface in the prior art is divided, and the cathode layers of the sub-pixel sets are connected with a driver chip through wires; the cathode layers are reused as self-capacitance touch control electrodes, the driver chip detects changes of capacitance values of the cathode layers through the wires to judge the touch control position, and therefore a touch control function is fulfilled. In addition, in the in cell touch display screen, signals outputted by the driver chip to the signal ends of sub-pixel circuits and the cathode layers in the fourth stage are formed in a mode that same touch control scanning signals are superposed on the basis of signals outputted in the third stage, and therefore the purpose that the working states of modules of the sub-pixel circuits are same to the working states in the third stage so as to ensure that normal display can be conducted can be achieved, and the in cell touch display screen based on an organic light emitting diode is obtained.

Description

technical field [0001] The invention relates to the technical field of touch display, in particular to an embedded touch display screen, a driving method thereof and a display device. Background technique [0002] With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread in people's lives. Currently, touch panels can be classified into: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel according to their composition and structure. Among them, the plug-in touch screen is produced separately from the touch screen and the display screen, and then bonded together to form a display screen with touch function. The plug-in touch screen has disadvantages such as high production cost, low light transmittance, and thick modules. The embedded touch screen embeds the touch electrodes of the touch screen inside the display screen, which can reduce the overall thickness of the module and greatly reduce the produc...

Claims

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Application Information

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IPC IPC(8): G06F3/041G09G3/32
CPCG09G3/3233G06F3/0412G06F3/041661G06F3/0443H10K59/40H10K50/11H10K50/81H10K50/82H10K59/122H10K59/124H10K59/131G06F2203/04111
Inventor 杨盛际董学薛海林王海生陈小川陈希谢建云刘红娟刘英明赵卫杰刘建涛
Owner BOE TECH GRP CO LTD
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