US2017068372A1PendingUtilityA1

Touch pressure detectable touch input device including display module

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Assignee: HIDEEP INCPriority: Sep 9, 2015Filed: Sep 7, 2016Published: Mar 9, 2017
Est. expirySep 9, 2035(~9.1 yrs left)· nominal 20-yr term from priority
Inventors:Taehwan KimBonkee Kim
G06F 2203/04105G06F 2203/04107G06F 3/044G06F 3/0412G06F 3/0414G02F 1/13338G06F 2203/04104G06F 3/0416H01L 27/323G06F 3/0446G06F 3/0447G06F 3/0445H10K 59/40
51
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Claims

Abstract

A touch input device detecting a touch position and a touch pressure may be provided. The touch input device includes a display module which includes a first layer made of glass or plastic and a second layer which is disposed under the first layer and is made of glass or plastic; a plurality of touch electrodes which are formed within the display module and are for detecting the touch position and the touch pressure; and a reference electrode which is disposed apart from the touch electrode.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A touch input device detecting a touch position and a touch pressure, the touch input device comprising:
 a display module which comprises a first layer made of glass or plastic and a second layer which is disposed under the first layer and is made of glass or plastic;   a plurality of touch electrodes which are formed within the display module and are for detecting the touch position and the touch pressure; and   a reference electrode which is disposed apart from the touch electrode;   wherein a drive signal is applied to the touch electrode and the touch position is detected by a sensing signal received from the touch electrode;   wherein an electrical signal which is changed by a capacitance between the touch electrode and the reference electrode is detected from the touch electrode;   wherein the capacitance is changed by a change of a distance between the touch electrode and the reference electrode;   wherein the distance between the touch electrode and the reference electrode is changed by a bend of the display module; and   wherein the touch pressure is detected based on the capacitance.   
     
     
         2 . The touch input device of  claim 1 , further comprising:
 a substrate which is disposed under the display module; and   a spacer layer which is disposed between the touch electrode and the reference electrode;   wherein a spacer layer retaining member having a predetermined thickness is formed along the circumference of the upper portion of the substrate in order to retain the spacer layer;   wherein, when the display module is bent by applying a pressure to the display module, the spacer layer retaining member is not transformed; and   wherein the reference electrode is the substrate.   
     
     
         3 . The touch input device of  claim 2 , wherein the touch electrode is formed on the top surface of the first layer. 
     
     
         4 . The touch input device of  claim 3 , wherein a liquid crystal layer is disposed between the first layer and the second layer. 
     
     
         5 . The touch input device of  claim 3 , wherein an organic material layer is disposed between the first layer and the second layer. 
     
     
         6 . The touch input device of  claim 2 , wherein the touch electrode is formed on the bottom surface of the first layer or on the top surface of the second layer. 
     
     
         7 . The touch input device of  claim 6 , wherein the touch electrode is a common electrode included in the display module. 
     
     
         8 . The touch input device of  claim 6 , wherein a liquid crystal layer is disposed between the first layer and the second layer. 
     
     
         9 . The touch input device of  claim 6 , wherein an organic material layer is disposed between the first layer and the second layer. 
     
     
         10 . A touch input device detecting a touch position and a touch pressure, the touch input device comprising:
 a display module which comprises a first layer made of glass or plastic and a second layer which is disposed under the first layer and is made of glass or plastic;   a first electrode for detecting the touch position and the touch pressure and a second electrode for detecting the touch position, which are formed within the display module; and   a reference electrode which is disposed apart from the first electrode;   wherein a drive signal is applied to any one of the first electrode and the second electrode, and the touch position is detected by a sensing signal received from the other of the first electrode and the second electrode;   wherein an electrical signal which is changed by a capacitance between the first electrode and the reference electrode is detected from the first electrode;   wherein the capacitance is changed by a change of a distance between the first electrode and the reference electrode;   wherein the distance between the first electrode and the reference electrode is changed by a bend of the display module; and   wherein the touch pressure is detected based on the capacitance.   
     
     
         11 . The touch input device of  claim 10 , further comprising:
 a substrate which is disposed under the display module; and   a spacer layer which is disposed between the first electrode and the reference electrode;   wherein a spacer layer retaining member having a predetermined thickness is formed along the circumference of the upper portion of the substrate in order to retain the spacer layer;   wherein, when the display module is bent by applying a pressure to the display module, the spacer layer retaining member is not transformed; and   wherein the reference electrode is the substrate.   
     
     
         12 . The touch input device of  claim 11 , wherein the first electrode and the second electrode are formed on the top surface of the first layer. 
     
     
         13 . The touch input device of  claim 12 , wherein a liquid crystal layer is disposed between the first layer and the second layer. 
     
     
         14 . The touch input device of  claim 12 , wherein an organic material layer is disposed between the first layer and the second layer. 
     
     
         15 . The touch input device of  claim 11 , wherein the first electrode and the second electrode are formed on the bottom surface of the first layer or on the top surface of the second layer. 
     
     
         16 . The touch input device of  claim 15 , wherein the first electrode or the second electrode is a common electrode included in the display module. 
     
     
         17 . The touch input device of  claim 15 , wherein a liquid crystal layer is disposed between the first layer and the second layer. 
     
     
         18 . The touch input device of  claim 15 , wherein an organic material layer is disposed between the first layer and the second layer. 
     
     
         19 . The touch input device of  claim 11 , wherein the second electrode is formed on the top surface of the first layer, and the first electrode is formed on the bottom surface of the first layer or on the top surface of the second layer. 
     
     
         20 . The touch input device of  claim 19 , wherein the first electrode is a common electrode included in the display module. 
     
     
         21 . The touch input device of  claim 19 , wherein a liquid crystal layer is disposed between the first layer and the second layer. 
     
     
         22 . The touch input device of  claim 19 , wherein an organic material layer is disposed between the first layer and the second layer.

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