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1. CN104020893 - In cell touch panel and display device

Office China
Application Number 201410240043.7
Application Date 30.05.2014
Publication Number 104020893
Publication Date 03.09.2014
Grant Number 104020893
Grant Date 04.01.2017
Publication Kind B
IPC
G06F 3/041
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
G02F 1/1333
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
CPC
G02F 1/13338
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements; ; Manufacturing methods
13338Input devices, e.g. touch panels
G02F 2001/134372
G06F 3/0412
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
0412Digitisers structurally integrated in a display
G06F 3/04164
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
0416Control or interface arrangements specially adapted for digitisers
04164Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
G06F 3/04166
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
0416Control or interface arrangements specially adapted for digitisers
04166Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
G06F 3/0443
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
044by capacitive means
0443using a single layer of sensing electrodes
Applicants 京东方科技集团股份有限公司
北京京东方光电科技有限公司
Inventors 刘英明
董学
薛海林
王海生
王磊
杨盛际
刘红娟
Agents 北京同达信恒知识产权代理有限公司 11291
Title
(EN) In cell touch panel and display device
(ZH) 一种内嵌式触摸屏及显示装置
Abstract
(EN)
The invention discloses an in cell touch panel and a display device. Multiple mutually independent self-capacitance electrodes located on the same layer are arranged according to the self-capacitance principle. A touch detecting chip can judge the touch position by detecting the change of the capacitance value of each self-capacitance electrode in a touch period. The self-capacitance electrodes and wires which enable the self-capacitance electrodes to be connected with the touch detecting chip are arranged on different layers. An inter-layer insulating layer is arranged between the self-capacitance electrodes and the wires. Each self-capacitance electrode is electrically connected with the corresponding wire through a via hole penetrating through the inter-layer insulating layer. False via holes are formed in the area, where the self-capacitance electrodes and the wires which are not connected with the self-capacitance electrodes are overlapped, of the inter-layer insulating layer. Namely, A concave portion is arranged on the area, where the self-capacitance electrodes and the wires which are not electrically connected with the self-capacitance electrodes are overlapped, of the inter-layer insulating layer. Due to the fact that the false via holes which are matched with the via holes are additionally formed in the inter-layer insulating layer, it is guaranteed that the patterns of a whole display area are uniform, and the uniformity of display frames of the in cell touch panel is improved.

(ZH)
本发明公开了一种内嵌式触摸屏及显示装置,利用自电容的原理设置多个同层且相互独立的自电容电极,触控侦测芯片在触控时间段通过检测各自电容电极的电容值变化可以判断出触控位置,自电容电极与将其连接至触控侦测芯片的导线异层设置,两者之间设置层间绝缘层,各自电容电极通过贯穿层间绝缘层的过孔与导线电性相连,并且在层间绝缘层中位于各自电容电极与不相连的导线的交叠区域设置假过孔,即层间绝缘层在自电容电极与除电性相连的导线以外导线的交叠区域设置凹陷部。通过在层间绝缘层中增加与过孔匹配的假过孔,保证了整个显示区域的图形均一性,从而提高触摸屏显示画面的均一性。