Touch screen, method of manufacturing the same and display panel
AssigneesBoe Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
InventorsQingpu Wang, Ming Hu
Life of this patent
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Abstract
A touch screen includes a first electrode and a second electrode that are disposed oppositely, and a sensing layer disposed between the first electrode and the second electrode. The sensing layer is made of transparent material having piezoelectric effect. The touch screen can sense pressure by any object, and therefore cannot only sense a position of a contact, but also sense a magnitude and a change characteristic of acting force. Also, the touch screen according to the present disclosure directly converts the pressure applied by the object onto the touch screen into an electric signal, which reduces the power consumption greatly, and therefore reduces whole power consumption of the screen effectively.
Claims14
A touch screen, comprising:
- a first electrode and a second electrode disposed oppositely, the first electrode comprising a plurality of first sub-electrodes and the second electrode comprising a plurality of second sub-electrodes,
- a sensing layer disposed between the first electrode and the second electrode, made of transparent material having piezoelectric effect, and comprising a plurality of piezoelectric sensing modules, and
- a plurality of transmission lines connected with the plurality of first sub-electrodes and the plurality of second sub-electrodes,
- wherein the plurality of piezoelectric sensing modules are a plurality of strip sensors arranged to be perpendicular to each other without an insulation layer at intersection areas between the plurality of strip sensors, and each of the first sub-electrodes is disposed corresponding to one of the strip sensors having a same arrangement direction with the first sub-electrode and each of the second sub-electrodes is disposed corresponding to one of the strip sensors having a same arrangement direction with the second sub-electrode.
A method for manufacturing a touch screen, wherein the touch screen comprises a first electrode and a second electrode that are disposed oppositely without arranging a protective layer at an outer side of the second electrode, and a sensing layer disposed between the first electrode and the second electrode, the first electrode comprises a plurality of first sub-electrodes and the second electrode comprises a plurality of second sub-electrodes, the sensing layer is made of transparent material having piezoelectric effect and comprises a plurality of piezoelectric sensing modules, the plurality of piezoelectric sensing modules are a plurality of strip sensors arranged to be perpendicular to each other without an insulation layer at intersection areas between the plurality of strip sensors, and each of the first sub-electrodes is disposed corresponding to one of the strip sensors having a same arrangement direction with the first sub-electrode and each of the second sub-electrodes is disposed corresponding to one of the strip sensors having a same arrangement direction with the second sub-electrode;
- the method for manufacturing the touch screen comprises:
- forming the first electrode, the second electrode and the sensing layer, respectively;
- and
- attaching the first electrode and the second electrode to two sides of the sensing layer, respectively, by means of adhesive.
A method for manufacturing a touch screen, wherein the touch screen comprises a first electrode and a second electrode that are disposed oppositely, and a sensing layer disposed between the first electrode and the second electrode, the first electrode comprises a plurality of first sub-electrodes and the second electrode comprises a plurality of second sub-electrodes, the sensing layer is made of transparent material having piezoelectric effect and comprises a plurality of piezoelectric sensing modules, a protective layer is disposed at an outer side of the second electrode, the plurality of piezoelectric sensing modules are a plurality of strip sensors arranged to be perpendicular to each other without an insulation layer at intersection areas between the plurality of strip sensors, and each of the first sub-electrodes is disposed corresponding to one of the strip sensors having a same arrangement direction with the first sub-electrode and each of the second sub-electrodes is disposed corresponding to one of the strip sensors having a same arrangement direction with the second sub-electrode;
- the method for manufacturing the touch screen comprises:
- forming the second electrode on the protective layer;
- attaching the second electrode to one side of the sensing layer by means of adhesive, after forming the second electrode;
- and
- forming the first electrode on the other side of the sensing layer, after attaching the second electrode.
Dependencies are inferred from the claim text.