CN110727376B - Touch control display screen - Google Patents
Touch control display screen Download PDFInfo
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- CN110727376B CN110727376B CN201911019151.0A CN201911019151A CN110727376B CN 110727376 B CN110727376 B CN 110727376B CN 201911019151 A CN201911019151 A CN 201911019151A CN 110727376 B CN110727376 B CN 110727376B
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- light guide
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a touch display screen, which comprises: the edge light guide component is made of light guide materials and located at the side edge position of the display module, the edge light guide component is provided with a first light guide part, a side edge part and a second light guide part, the first light guide part is located on the rear side of the plane where the display module is located and is opposite to the touch sensing component, the side edge part is located on the side edge of the display module, and the second light guide part is located on the front side of the plane where the display module is located. The touch display screen is simple in structure and the thickness of the frame is small.
Description
Technical Field
The invention relates to the technical field of touch screens, in particular to a touch display screen.
Background
The touch screen of infrared technology is composed of infrared transmitting and receiving sensing elements arranged on the outer frame of the touch screen, an infrared detecting network is formed on the surface of the screen, and any touch object can change the infrared on the contact point to realize the operation of the touch screen.
The existing touch screen comprises a display screen, a backlight module and an infrared transmitting and receiving sensing element arranged on an outer frame of the display screen, wherein the elements are independently arranged, occupy a large amount of space and make the touch screen thick and unattractive.
Disclosure of Invention
The invention aims to provide a touch display screen which is simple in structure and thin in frame thickness.
The technical scheme is as follows:
touch-sensitive display screen includes: the edge light guide component is made of light guide materials and located at the side edge position of the display module, the edge light guide component is provided with a first light guide part, a side edge part and a second light guide part, the first light guide part is located on the rear side of the plane where the display module is located and is opposite to the touch sensing component, the side edge part is located on the side edge of the display module, and the second light guide part is located on the front side of the plane where the display module is located.
The edge light guide component is made of light guide materials, the first light guide part, the side edge part and the second light guide part form a light guide path, the touch sensing element emits sensing light, the sensing light is guided to the side edge part through the first light guide part and then guided to the second light guide part along the guide path of the side edge part and then passes through the upper surface of the display module and emits to the edge of the other side of the display module, and similarly, when the sensing light reaches the edge of the other side of the display module, the sensing light is guided to the touch sensing element of the other side through the light guide path formed by the edge light guide component, and the touch sensing element of the other side receives the sensing light to form a touch sensing system;
the edge light guide component is positioned at the side edge position of the display module, a display screen frame is not required to be additionally arranged on the touch display screen, and the edge light guide component can be directly used as the display screen frame, so that the structure of the display screen is simplified, and the thickness of the frame is reduced;
the touch sensing element is located the display module assembly rear side for the dust is difficult for dropping on the touch sensing element, has guaranteed the touch-control effect, is favorable to protecting the touch sensing element, prolongs the working life of touch-control display screen.
The edge light guide component is provided with an installation step, and the edge of the display module is arranged on the installation step. The installation step makes the installation operation of display module assembly more simple and convenient, and edge light guide component is as the display screen frame, arranges the edge of display module assembly in this installation step, saves the frame space.
The mounting steps at least comprise a first step and a second step, the display module at least comprises a display screen body and a protective layer, the display screen body is arranged on the first step, and the protective layer is arranged on the second step. The installation operation of the display screen body and the protective layer is simpler and more convenient due to the arrangement of the first step and the second step, and the protective layer fully covers the display screen body, so that the display screen body is protected.
The inner side of the edge light guide part is provided with a first horizontal plane, a first vertical plane and a second horizontal plane, the first horizontal plane is connected with the first light guide part, the first vertical plane is connected with the first horizontal plane, the second horizontal plane is connected with the first vertical plane, and the second light guide part is connected with the second horizontal plane; the first step is formed between the first horizontal plane and the first vertical plane, and the second step is formed between the second horizontal plane and the second light guide part. Above setting, make things convenient for display module's installation, the frame inner space obtains make full use of, reduces the thickness of frame.
The first light guide part is a first light guide plane, and the first light guide plane is perpendicular to the plane where the display module is located. The first light guide plane is perpendicular to the plane where the display module is located, so that the sensing light emitted by the touch sensing element is parallel to the display module, and the touch effect is ensured; simultaneously, first leaded light plane plays the supporting role to display module assembly, the steadiness when being favorable to improving display module assembly installation.
The second light guide part is a second light guide plane, and the second light guide plane is perpendicular to the plane where the display module is located. The second light guide plane is perpendicular to the plane where the display module is located, so that the sensing light passing through the second light guide plane is parallel to the display module, and the touch effect is ensured; simultaneously, the second leaded light plane plays the supporting role to the display module assembly, is favorable to improving the steadiness when display module assembly installs.
And a light guide inclined plane is arranged on the outer side of the edge light guide component. The light guide inclined plane is used for changing the direction of a light guide path of the first light guide part and guiding the induction light passing through the first light guide part to the second light guide part.
The light guide inclined plane comprises a first light guide inclined plane and a second light guide inclined plane. The induction light is guided to the first light guide inclined plane through the first light guide part, then the induction light is guided to the second light guide inclined plane through the first light guide inclined plane, and then the induction light is guided to the second light guide part through the second light guide inclined plane.
The included angle between the first light guide inclined plane and the second light guide inclined plane is 85-95 degrees. The included angle between the first light guide inclined plane and the plane where the second light guide inclined plane and the display module are located is 45 degrees. The induction light passing through the upper surface of the display module is parallel to the display module, and the touch effect is guaranteed.
The outer surface of the edge light guide component is provided with a red coating. The outer surface of the edge light guide component is provided with the red coating, so that the loss of the induction light is reduced, and the touch effect is ensured.
The backlight module further comprises a back plate, a third step is arranged on the back side of the edge light guide component, and the back plate is mounted on the third step. The back plate is favorable for protecting internal elements of the display screen, the back plate is arranged on the third step, and the frame space is fully utilized.
The back side of the display module is provided with a light guide plate, and the edge part of the light guide plate is provided with a light emitting part. Light that luminous component sent gets into the light guide plate, and the dorsal part of display module assembly is located to the light guide plate, and luminous component provides the area source for display module assembly.
The touch screen is characterized by further comprising a circuit mounting plate, the light emitting part is mounted on the first side of the circuit mounting plate, and the touch sensing element is mounted on the second side of the circuit mounting plate. The light-emitting component and the touch sensing element are respectively arranged on two sides of the same circuit mounting plate, so that the internal structure of the display screen is simplified, the internal space of the display screen is saved, and the thickness of a frame of the display screen is reduced.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a touch display screen according to an embodiment of the present invention.
Description of reference numerals:
10. a display module; 11. a display screen body; 12. a protective layer; 20. a touch sensitive element; 30. an edge light guide member; 31. a first light guide part; 32. a side edge portion; 33. a second light guide part; 34. a first step; 35. a second step; 36. a third step; 37. a first light guiding slope; 38. a second light guiding slope; 40. a back plate; 50. a light guide plate; 60. a light emitting part; 70. a circuit mounting board.
Detailed Description
The following provides a detailed description of embodiments of the invention.
As shown in fig. 1, the touch display screen includes: the display module comprises a display module 10, a touch sensing element 20 and an edge light guide member 30, wherein the edge light guide member 30 is symmetrically arranged at the side edge position of the display module 10, the edge light guide member 30 is provided with a first light guide part 31, a side part 32 and a second light guide part 33, the first light guide part 31 is positioned at the rear side of the plane where the display module 10 is positioned and is opposite to the touch sensing element 20, the side part 32 is positioned at the side of the display module 10, and the second light guide part 33 is positioned at the front side of the plane where the display module 10 is positioned. In this embodiment, the sensing light is infrared light, the infrared light is guided to the side portion 32 through the first light guiding portion 31, then the infrared light is guided to the second light guiding portion 33 along the light guiding path of the side portion 32, and then the infrared light is guided to pass through the upper surface of the display module 10 and is emitted to the other side edge of the display module 10 through the second light guiding portion 33, similarly, when the infrared light reaches the other side edge of the display module 10, the infrared light is guided to the touch sensing element 20 on the other side through the light guiding path formed by the edge light guiding member 30, and the touch sensing element 20 on the other side receives an infrared light signal, so as to form a touch sensing system.
Edge light guide component 30 is located the side edge position of display module assembly 10, and this touch-control display screen need not add in addition and establishes the display screen frame, and edge light guide component 30 can directly regard as the display screen frame, and display module assembly 10 and other components can be installed on edge light guide component 30, have simplified the display screen structure, reduce the thickness of frame, reduction in production cost simultaneously.
Touch-sensitive component 20 is located display module assembly 10 rear side for the dust is difficult for dropping on touch-sensitive component 20, has guaranteed the touch-control effect, is favorable to protecting touch-sensitive component 20, prolongs touch display screen's working life.
The red coating layer is disposed on the outer surface of the edge light guide member 30, which is beneficial to reducing the loss of infrared light and ensuring the spectrum of light to ensure the touch effect.
A first horizontal plane, a first vertical plane and a second horizontal plane are arranged on the inner side of the edge light guide member 30, the first horizontal plane is connected with the first light guide part 31, the first vertical plane is connected with the first horizontal plane, the second horizontal plane is connected with the first vertical plane, and the second light guide part 33 is connected with the second horizontal plane; a first step 34 is formed between the first horizontal plane and the first vertical plane, a second step 35 is formed between the second horizontal plane and the second light guide part 33, and a third step 36 is provided on the back side of the edge light guide member 30. In this embodiment, the display panel body 11 is disposed on the first step 34, the protective layer 12 is disposed on the second step 35, the back plate 40 is mounted on the third step 36, and the edge light guide member 30 is made of a solid flexible light guide material, and has a buffering effect on the display panel body 11, the protective layer 12, and the back plate 40, thereby facilitating protection of components; the steps are arranged to facilitate installation of the display screen body 11, the protective layer 12 and the back plate 40, the display screen body 11, the protective layer 12 and the back plate 40 are respectively placed on the steps and injection molding is carried out on the edge strips, installation can be completed, meanwhile, the inner space of the frame is fully utilized, and the thickness of the frame is reduced; in addition, the protective layer 12 and the back plate 40 can effectively protect the display screen body 11 and the internal components, and prolong the service life of the display screen.
The first light guide portion 31 is a first light guide plane, and the first light guide plane is perpendicular to the plane where the display module 10 is located. The second light guiding portion 33 is a second light guiding plane perpendicular to the plane of the display module 10. The infrared light emitted from the touch sensing element 20 and the infrared light emitted by being guided by the second light guide part 33 are always parallel to the display module 10, so that the infrared light is not easily blocked, and normal transmission and reception of infrared light signals are ensured, so as to ensure the touch effect; the first and second light guide planes respectively support the display module 10, so that the display module 10 is stable during installation and convenient to install.
The outer side of the edge light guide member 30 is provided with a light guide slope. The light guide slopes include a first light guide slope 37 and a second light guide slope 38. The light guide slope changes the transmission direction of the infrared light by means of light reflection, the infrared light is emitted from the touch sensing element 20, guided to the first light guide slope 37 through the first light guide portion 31, and then guided to the second light guide slope 38 by the first light guide slope 37 and then guided to the second light guide portion 33 to be emitted.
The included angle between the first light guide slope 37 and the second light guide slope 38 is 85 to 95 degrees. The included angle between the first light guide inclined plane 37 and the second light guide inclined plane 38 and the plane where the display module 10 is located is 45 degrees. The setting of angle utilizes the reflection of light to make the inboard infrared light that sends of display module assembly 10 can follow display module assembly 10 upper surface process, and makes infrared light and display module assembly 10 remain parallel throughout, prevents that the infrared light from being sheltered from, guarantees touch-control effect.
The display module 10 includes a light guide plate 50 disposed on a back side thereof, a light emitting member 60 disposed at an edge of the light guide plate 50, and a circuit mounting board 70, wherein the light emitting member 60 is mounted on a first side of the circuit mounting board 70, and the touch sensing element 20 is mounted on a second side of the circuit mounting board 70. The light emitting component 60 provides a surface light source for the display module 10, the light guide plate 50 is disposed on the back side of the display module 10, and the light emitting component 60 and the touch sensing element 20 are respectively mounted on two sides of the same circuit mounting plate 70, so that the internal structure of the display screen is simplified, the internal space of the display screen is saved, and the thickness of the frame of the display screen is reduced.
The above are merely specific embodiments of the present invention, and the scope of the present invention is not limited thereby; any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (12)
1. Touch-control display screen, its characterized in that includes: the edge light guide component is made of light guide materials and is positioned at the side edge position of the display module, the edge light guide component is provided with a first light guide part, a side edge part and a second light guide part, the first light guide part is positioned at the rear side of the plane where the display module is positioned and is opposite to the touch sensing component, the side edge part is positioned at the side edge of the display module, and the second light guide part is positioned at the front side of the plane where the display module is positioned;
the edge light guide component is provided with an installation step, and the edge of the display module is arranged on the installation step;
the mounting steps at least comprise a first step and a second step, the display module at least comprises a display screen body and a protective layer, the display screen body is arranged on the first step, and the protective layer is arranged on the second step.
2. The touch display screen of claim 1, wherein a first horizontal plane, a first vertical plane, and a second horizontal plane are disposed inside the edge light guide member, the first horizontal plane is connected to the first light guide portion, the first vertical plane is connected to the first horizontal plane, the second horizontal plane is connected to the first vertical plane, and the second light guide portion is connected to the second horizontal plane; the first step is formed between the first horizontal plane and the first vertical plane, and the second step is formed between the second horizontal plane and the second light guide part.
3. The touch display screen of claim 1 or 2, wherein the first light guide portion is a first light guide plane, and the first light guide plane is perpendicular to a plane where the display module is located.
4. The touch display screen of claim 1 or 2, wherein the second light guide portion is a second light guide plane, and the second light guide plane is perpendicular to a plane where the display module is located.
5. The touch display screen of claim 1 or 2, wherein a light guide slope is disposed on an outer side of the edge light guide member.
6. The touch display screen of claim 5, wherein the light guide slopes comprise a first light guide slope and a second light guide slope.
7. The touch display screen of claim 6, wherein an included angle between the first light guide slope and the second light guide slope is 85 to 95 degrees.
8. The touch display screen of claim 7, wherein an included angle between the first light guide slope and the plane where the display module is located and the second light guide slope is 45 degrees.
9. The touch display screen of claim 1 or 2, wherein the outer surface of the edge light guide member is provided with a red coating.
10. The touch display screen of claim 1 or 2, further comprising a back plate, wherein a third step is disposed on a back side of the edge light guide member, and the back plate is mounted on the third step.
11. The touch display panel according to claim 1 or 2, wherein a light guide plate is disposed on a back side of the display module, and a light emitting part is disposed at an edge of the light guide plate.
12. The touch display screen of claim 11, further comprising a circuit mounting board, wherein the light emitting member is mounted to a first side of the circuit mounting board and the touch sensitive element is mounted to a second side of the circuit mounting board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911019151.0A CN110727376B (en) | 2019-10-24 | 2019-10-24 | Touch control display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911019151.0A CN110727376B (en) | 2019-10-24 | 2019-10-24 | Touch control display screen |
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| Publication Number | Publication Date |
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| CN110727376A CN110727376A (en) | 2020-01-24 |
| CN110727376B true CN110727376B (en) | 2021-08-31 |
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| CN201911019151.0A Active CN110727376B (en) | 2019-10-24 | 2019-10-24 | Touch control display screen |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112764254A (en) | 2021-01-22 | 2021-05-07 | 合肥京东方显示技术有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8896575B2 (en) * | 2002-11-04 | 2014-11-25 | Neonode Inc. | Pressure-sensitive touch screen |
| KR101128030B1 (en) * | 2009-12-14 | 2012-03-29 | (주)누리봄 | System of touch panel |
| CN102622133A (en) * | 2012-02-21 | 2012-08-01 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen for changing infrared light transmission paths and touch point recognizing method for infrared touch screen |
| CN203012683U (en) * | 2012-12-05 | 2013-06-19 | 成都吉锐触摸技术股份有限公司 | Infrared touch screen |
| CN105531653A (en) * | 2013-07-19 | 2016-04-27 | 惠普发展公司，有限责任合伙企业 | Light guide panel including diffraction gratings |
| CN206133523U (en) * | 2016-10-12 | 2017-04-26 | 惠州市德赛西威汽车电子股份有限公司 | On -vehicle arc limit infrared touch -screen |
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