Light-sensitive type touch panel, display device and touch positioning method
First Claim
Patent Images
1. A light-sensitive type touch panel, comprising:
- a support substrate;
a first thin film, on the support substrate;
a second thin film, which is on the support substrate, opposite to the first thin film in a direction perpendicular to the support substrate, and provided with a first surface close to the first thin film and a second surface away from the first thin film;
a fluid layer, which is between the first thin film and the second thin film in the direction perpendicular to the support substrate, and adjacent to the first surface of the second thin film, wherein a refractive index of the fluid layer is smaller than a refractive index of the second thin film;
a light source, configured to emit incident light which is incident to the second thin film; and
a light sensor, on a side, away from the second thin film, of the first thin film,whereinin absence of pressure being applied to a preset position of the second thin film, the incident light falls on the second surface at a first angle with respect to the second surface after the incident light is incident to the second thin film; and
in presence of pressure being applied to the preset position of the second thin film, a second angle is formed between a part of the incident light and the second surface, and a difference between the second angle and the first angle is greater than or equal to 1° and
smaller than or equal to 2°
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Abstract
A light-sensitive type touch panel, a display device and a touch positioning method are provided. The light-sensitive type touch panel includes: a first thin film on a support substrate; a second thin film opposite to the first thin film in a direction perpendicular to the support substrate; a fluid layer, which is between the first thin film and the second thin film in the direction perpendicular to the support substrate, adjacent to the first surface, which is close to the first thin film, of the second thin film, and has a refractive index smaller than that of the second thin film; a light source configured to emit incident light which is incident to the second thin film; and a light sensor on a side, away from the second thin film, of the first thin film.
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Citations
19 Claims
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1. A light-sensitive type touch panel, comprising:
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a support substrate; a first thin film, on the support substrate; a second thin film, which is on the support substrate, opposite to the first thin film in a direction perpendicular to the support substrate, and provided with a first surface close to the first thin film and a second surface away from the first thin film; a fluid layer, which is between the first thin film and the second thin film in the direction perpendicular to the support substrate, and adjacent to the first surface of the second thin film, wherein a refractive index of the fluid layer is smaller than a refractive index of the second thin film; a light source, configured to emit incident light which is incident to the second thin film; and a light sensor, on a side, away from the second thin film, of the first thin film, wherein in absence of pressure being applied to a preset position of the second thin film, the incident light falls on the second surface at a first angle with respect to the second surface after the incident light is incident to the second thin film; and in presence of pressure being applied to the preset position of the second thin film, a second angle is formed between a part of the incident light and the second surface, and a difference between the second angle and the first angle is greater than or equal to 1° and
smaller than or equal to 2°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A touch positioning method, comprising:
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irradiating incident light to a second thin film which is on a support substrate, is opposite to a first thin film on the support substrate and is provided with a first surface close to the first thin film and a second surface away from the first thin film, so that the incident light travels in the second thin film in absence of pressure being applied to the second thin film, wherein in a direction perpendicular to the support substrate, a fluid layer is provided between the first thin film and the second thin film; applying a pressure to a preset position of the second thin film to enable a part of the incident light to emerge from the first surface, which is in contact with the first thin film, of the second thin film, and to form emergent light; and determining the preset position by detecting the emergent light, wherein in absence of pressure being applied to a preset position of the second thin film, the incident light falls on the second surface at a first angle with respect to the second surface after the incident light is incident to the second thin film; and in presence of pressure being applied to the preset position of the second thin film, a second angle is formed between a part of the incident light and the second surface, and a difference between the second angle and the first angle is greater than or equal to 1° and
smaller than or equal to 2°
.
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Specification
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Current AssigneeBeijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
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Original AssigneeBOE Technology Group Co., Ltd.
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InventorsRen, Jinyu, Song, Yongzhi, Zhou, Bo
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Primary Examiner(s)Mercedes, Dismery
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Application NumberUS15/540,489Publication NumberTime in Patent Office1,189 DaysField of SearchUS Class CurrentCPC Class CodesG02F 1/13338 Input devices, e.g. touch p...G06F 2203/04109 FTIR in optical digitiser, ...G06F 3/041 Digitisers, e.g. for touch ...G06F 3/0412 Digitisers structurally int...G06F 3/042 by opto-electronic meansG06F 3/0421 by interrupting or reflecti...
