CN111399698A - Vehicle-mounted touch display device - Google Patents
Vehicle-mounted touch display device Download PDFInfo
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- CN111399698A CN111399698A CN202010365602.2A CN202010365602A CN111399698A CN 111399698 A CN111399698 A CN 111399698A CN 202010365602 A CN202010365602 A CN 202010365602A CN 111399698 A CN111399698 A CN 111399698A
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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
- G06F3/0412—Digitisers structurally integrated in a display
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
-
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention relates to a vehicle-mounted touch display device, which comprises a capacitive touch screen and a display screen, wherein the capacitive touch screen is arranged on the outer side of the display screen and is mutually attached, the capacitive touch screen comprises a glass substrate and a touch circuit layer arranged on the inner side of the glass substrate, and the vehicle-mounted touch display device is characterized in that: the capacitive touch screen further comprises a light extinction layer, the light extinction layer is clamped between the touch circuit layer and the glass substrate, and the light extinction layer is a black or dark light absorption film layer with the average light transmittance of less than 30%. The vehicle-mounted touch display device can not only greatly eliminate the reflected light of the touch circuit layer and achieve the effect of a screen close to pure black, but also has simple manufacturing process and greatly reduces the difficulty of manufacturing the capacitive touch screen.
Description
Technical Field
The invention relates to a touch display assembly, in particular to a vehicle-mounted touch display device.
Background
The vehicle-mounted touch display device is generally applied to an automobile as an instrument screen or a central control screen, and generally comprises a capacitive touch screen and a display screen which are attached to each other; a capacitive touch screen generally includes a transparent substrate (glass substrate) and a touch circuit layer disposed inside thereof.
When an automobile is used in an outdoor environment, the automobile is often exposed to strong ambient light, and because the touch circuit layer generally comprises a large number of touch sensing electrodes which are generally made of transparent conductive oxide thin films such as ITO (indium tin oxide) and have high refractive index, the touch circuit layer often generates strong reflected light under the irradiation of the ambient light, and the reflected light interferes with the normal driving of a driver to generate certain potential safety hazard.
At present, a method of arranging a plurality of anti-reflection film layers on the outer side of a touch circuit layer is generally adopted to reduce the reflected light of the touch circuit layer, the method needs to cover a plurality of anti-reflection films with different refractive indexes and thicknesses on a transparent conductive oxide film, the manufacturing process is very complex and difficult to control, and the difficulty in manufacturing a capacitive touch screen is greatly increased. In addition, the existing anti-reflection film layer can not completely eliminate the reflected light, and can cause color cast of the screen, and the best effect of pure black can not be achieved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vehicle-mounted touch display device, which can greatly eliminate the reflected light of a touch circuit layer, achieve the screen effect close to pure black, has a simple manufacturing process and can greatly reduce the difficulty of manufacturing a capacitive touch screen. The technical scheme is as follows:
the utility model provides an on-vehicle touch-control display device, includes capacitive touch screen and display screen, capacitive touch screen sets up in the outside of display screen and laminate each other, and capacitive touch screen includes glass substrate and sets up at its inboard touch-control circuit layer, its characterized in that: the capacitive touch screen further comprises a light extinction layer, the light extinction layer is clamped between the touch circuit layer and the glass substrate, and the light extinction layer is a black or dark light absorption film layer with the average light transmittance of less than 30%.
The capacitive touch screen and the display screen can be fixed to each other in a frame pasting (namely, only one circle of the capacitive touch screen and the display screen are pasted) mode (an air layer is generally clamped between the capacitive touch screen and the display screen), and can also be fixed to each other in a full pasting mode (a transparent adhesive layer is generally clamped between the capacitive touch screen and the display screen).
The touch circuit layer generally includes a plurality of sensing electrodes disposed in the display region and connecting circuits thereof, and the sensing electrodes are generally formed by patterning (e.g., photolithography) a transparent conductive film layer (e.g., Indium Tin Oxide (ITO), zinc aluminum oxide (AZO), Indium Gallium Zinc Oxide (IGZO)); the connecting circuit generally includes a jumper wire for connecting the sensing electrode, a peripheral circuit or an external terminal, and is generally formed by patterning a metal film (e.g., a molybdenum niobium-aluminum niobium-molybdenum niobium three-layer alloy (molybdenum aluminum molybdenum)) and the transparent conductive film.
The extinction layer and the touch circuit layer form a display area of the vehicle-mounted touch display device. When ambient light irradiates a display area of the vehicle-mounted touch display device, the ambient light penetrates through the glass substrate and the extinction layer to be reflected on a film layer of the touch circuit layer, and then sequentially penetrates through the extinction layer and the glass substrate to come out, the ambient light passes through the extinction layer twice in sequence to be obviously weakened (at least 90 percent weakened), the reflected light of the touch circuit layer is greatly eliminated, and a screen effect close to pure black is achieved; in the touch display device, the touch circuit layer of the capacitive touch screen can realize low reflection without adopting a complex anti-reflection design, the manufacturing process is simpler, reflected light color which is difficult to eliminate cannot occur, and the difficulty in manufacturing the capacitive touch screen can be greatly reduced.
Because the touch circuit layer is formed on the extinction layer, in order to ensure the flatness of the extinction layer (and further ensure the accurate pattern of the touch circuit layer), in a preferred scheme, the extinction layer is a black or dark photosensitive resin coating. The photosensitive resin coating is coated into a film in an extrusion coating mode, and then ultraviolet light is further irradiated for curing.
More preferably, the black or dark photosensitive resin coating layer is formed by coating negative photosensitive resin mixed with carbon particles or dark dye.
More preferably, the thickness of the extinction layer is 0.5 μm-4 μm.
Considering that the extinction layer also reduces the transmittance of the capacitive touch screen, the display screen is preferably a flat panel display, and the maximum screen brightness of the display screen is greater than 1000 nit. Therefore, the display picture can be ensured to have enough brightness after passing through the capacitive touch screen.
The display screen can adopt a display with light emitting diodes L ED directly as pixels (or sub-pixels), the pixels of the display are directly formed by L ED, the brightness of the display is extremely high, so that the display can more easily reach high brightness of more than 1000nit, more preferably, the display screen is micro L0 ED or mini L1 ED display, the pixel area of the display screen is defined with L2 ED arrangement area, the area ratio of L ED arrangement area to the pixel area is less than or equal to 50%, the micro L ED or mini L ED display L ED is arranged in L ED arrangement area, the L ED arrangement area of each pixel can be provided with a plurality of L ED, especially L ED with different colors, so as to form color display.
In a further more preferable scheme, the extinction layer comprises a first extinction layer and a second extinction layer, the first extinction layer covers the inner side face of the glass substrate, the light transmittance of the first extinction layer is less than 60%, the second extinction layer covers the inner side face of the first extinction layer, the light transmittance of the second extinction layer is less than 5%, the second extinction layer is provided with a plurality of light transmission holes, the light transmission holes correspond to the positions of the L ED arrangement areas, the light transmission holes are hollow holes formed in the second extinction layer through patterning, light of each L ED is mainly emitted through the corresponding light transmission hole, light of L ED in the light transmission holes is only absorbed by the first extinction layer, the light transmittance of the first extinction layer is higher, the display brightness can be improved, and the second extinction layer has very small influence on light emission of L ED, so that the second extinction layer can be designed with lower light transmittance (even completely opaque) to eliminate reflection of the touch circuit layer in the area other than L ED arrangement area.
In a further more preferable scheme, the cross-sectional area of the light transmission holes is 0.8-1.4 times of that of the L ED arrangement area, and the cross-sectional area of the light transmission holes can be specifically controlled, so that the average light transmission rate of the extinction layer is less than 30%.
In order to improve the exit angle (and the color mixture) of L ED light from the light hole under the condition that the capacitive touch screen and the display screen are fixed to each other (an air layer is generally sandwiched between the touch screen and the display screen) in a frame pasting mode (namely, only one circle of peripheral pasting mode), in a further more preferable scheme, a scattering layer is arranged on the inner side of the light hole, the scattering layer is a white or gray ink layer or a photosensitive resin coating, and the scattering layer forms a graphic block covering the inner side of the light hole in a printing or exposure and development mode.
In order to improve the display brightness or reduce the area of the light-transmitting hole, still more preferably, a micro lens is arranged between the scattering layer and the L ED arrangement region, wherein the micro lens can converge the L ED light emission corresponding to the micro lens on the corresponding scattering layer, thereby improving the display brightness, or reduce the area of the light-transmitting hole, thereby further reducing the reflection.
According to the vehicle-mounted touch display device, the extinction layer is arranged between the touch circuit layer and the glass substrate, the extinction layer is a black or dark light absorption film layer with the average light transmittance of less than 30%, reflected light of the touch circuit layer can be eliminated greatly when ambient light irradiates the display area of the vehicle-mounted touch display device, a screen effect close to pure black can be achieved, and in the touch display device, the touch circuit layer of the capacitive touch screen can achieve low reflection without adopting a complex anti-reflection design, the manufacturing process is simple, reflected light color which is difficult to eliminate cannot occur, and the manufacturing difficulty of the capacitive touch screen can be greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a table of the sizes of the pixel, L ED arrangement region, L ED, and light-transmitting hole in the case where the average light transmission rate of the matte layer is 8% in example two.
Fig. 5 is a schematic structural diagram of a third preferred embodiment of the present invention.
Detailed Description
Example one
As shown in fig. 1, the vehicle-mounted touch display device includes a capacitive touch screen 1 and a display screen 2, wherein the capacitive touch screen 1 is arranged outside the display screen 2 and attached to each other; the capacitive touch screen 1 comprises a glass substrate 11, a touch circuit layer 12 and a light extinction layer 13, wherein the touch circuit layer 12 and the light extinction layer 13 are arranged on the inner side of the glass substrate, the light extinction layer 13 is sandwiched between the touch circuit layer 12 and the glass substrate 11, and the light extinction layer 13 is a black or dark light absorption film layer with the average light transmittance of less than 30%.
In this embodiment, the light extinction layer 13 is a black or dark photosensitive resin coating layer formed by coating a negative photosensitive resin mixed with carbon particles or a dark dye. The photosensitive resin coating is coated into a film in an extrusion coating mode, and then ultraviolet light is further irradiated for curing.
In the present embodiment, the thickness of the extinction layer 13 is 0.5 μm-4 μm.
In the present embodiment, the display panel 2 is a flat panel display 21, and the maximum screen brightness thereof is greater than 1000nit, so that it can be ensured that the display frame thereof has sufficient brightness after passing through the capacitive touch panel 1.
The touch circuit layer 12 and the extinction layer 13 constitute a display area of the vehicle-mounted touch display device. When ambient light irradiates the display area of the vehicle-mounted touch display device, the ambient light penetrates through the glass substrate 11 and the extinction layer 13, is reflected on the film layer of the touch circuit layer 12, then sequentially penetrates through the extinction layer 13 and the glass substrate 11, and then passes through the extinction layer 13 twice to be obviously weakened (at least 90 percent weakened), so that the reflected light of the touch circuit layer 12 is greatly eliminated, and the screen effect close to pure black is achieved.
Example two
Referring to fig. 2 and 3, in the case that the rest of the display screen is the same as the first embodiment, the difference is that in the first embodiment, the display screen 2 is a micro L ED or mini L ED display, the highest screen brightness is greater than 1000nit, a L ED arrangement region 22 is defined in the pixel region 21, the area ratio of the L ED arrangement region 22 to the pixel region 21 is less than or equal to 50%, and L ED221 of the micro L ED or mini L ED display is disposed in the L ED arrangement region 22.
In the present embodiment, the extinction layer 13 ' includes a first extinction layer 131 ' and a second extinction layer 132 ', the first extinction layer 131 ' is covered on the inner side surface of the glass substrate 11, the light transmittance of the first extinction layer 131 ' is less than 60%, the second extinction layer 132 ' is covered on the inner side surface of the first extinction layer 131 ', the light transmittance of the second extinction layer 132 ' is less than 5%, the second extinction layer 132 ' is provided with a plurality of light transmission holes 1321, the light transmission holes 1321 correspond to the positions of the L ED arrangement regions 22, the cross-sectional area of the light transmission holes 1321 is 0.8 to 1.4 times of the L ED arrangement regions 22, the cross-sectional area of the light transmission holes 1321 can be specifically controlled, so that the average light transmittance of the extinction layer 13 ' is less than 30% (see the specific embodiment of fig. 4, the light transmittance of the first extinction layer 131 ' is 40%, the light transmittance of the second extinction layer 132 ' is approximately 0, the area ratio of the final L ED arrangement regions 22 to pixels is 12%, and the average light transmittance of the extinction layer 13 '.
Each light hole 1321 is a hollow hole formed by patterning the second extinction layer 132 ', light emitted by each L ED221 mainly passes through the corresponding light hole 1321, light emitted by the L ED221 in the light hole 1321 is only absorbed by the first extinction layer 131 ', and the light transmittance of the first extinction layer 131 ' is higher, so that the display brightness can be improved, and because the second extinction layer 132 ' has very small influence on light emitted by the L ED221, the second extinction layer 132 ' can adopt a lower light transmittance design (even completely opaque) to eliminate reflection of the touch circuit layer 12 in the non-L ED arrangement area 22, so that the display brightness can be improved, and reflection of the touch circuit layer 12 can be effectively reduced.
EXAMPLE III
Referring to fig. 5, in the case that the other portions are the same as those of the embodiment, the capacitive touch panel 1 and the display panel 2 may be fixed to each other by frame attachment (i.e., only one round of the periphery is attached) (an air layer is generally sandwiched between the capacitive touch panel 1 and the display panel 2), the scattering layer 31 is disposed inside the light transmitting hole 1321, the scattering layer 31 is a white or gray ink layer or a photosensitive resin coating, the transparent isolation layer 32 is disposed on the outer side surface of the display panel 2, the SiO2 film 33 is disposed on the outer side surface of the transparent isolation layer 32, the microlens 34 is disposed on the outer side surface of the SiO2 film 33 (the microlens 34 is formed by coating the photosensitive resin coating, patterning into a circular dot, and heating to melt the lens shape), and the microlens 34 is located between the scattering layer 31 and the L ED arrangement region 22.
The scattering layer 31 forms a pattern block covering the inner side of the light transmission hole 1321 by means of printing or exposure and development, the lens layer 34 can focus the corresponding L ED221 light emission on the corresponding scattering layer 31, so that the display brightness is improved, or the area of the light transmission hole 1321 is reduced, and the reflection is further reduced.
In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and the equivalent or simple change of the structure, the characteristics and the principle described in the present patent idea is included in the protection scope of the present patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides an on-vehicle touch-control display device, includes capacitive touch screen and display screen, capacitive touch screen sets up in the outside of display screen and laminate each other, and capacitive touch screen includes glass substrate and sets up at its inboard touch-control circuit layer, its characterized in that: the capacitive touch screen further comprises a light extinction layer, the light extinction layer is clamped between the touch circuit layer and the glass substrate, and the light extinction layer is a black or dark light absorption film layer with the average light transmittance of less than 30%.
2. The vehicle-mounted touch display device according to claim 1, wherein: the extinction layer is a black or dark photosensitive resin coating.
3. The vehicle-mounted touch display device according to claim 2, wherein: the black or dark photosensitive resin coating is formed by coating negative photosensitive resin mixed with carbon particles or dark dye.
4. The vehicle-mounted touch display device according to claim 2 or 3, wherein: the thickness of the matting layer is 0.5 μm-4 μm.
5. The vehicle-mounted touch display device according to claim 1, wherein: the display screen is a flat panel display, and the highest screen brightness of the display screen is more than 1000 nit.
6. The vehicular touch display device according to claim 5, wherein the display screen is a micro L ED or mini L ED display, a L ED arrangement area is defined in a pixel area, the area ratio of the L ED arrangement area to the pixel area is less than or equal to 50%, and L ED of the display is arranged in a L ED arrangement area.
7. The vehicle-mounted touch display device according to claim 6, wherein the extinction layer comprises a first extinction layer and a second extinction layer, the first extinction layer covers the inner side surface of the glass substrate, the light transmittance of the first extinction layer is less than 60%, the second extinction layer covers the inner side surface of the first extinction layer, the light transmittance of the second extinction layer is less than 5%, the second extinction layer is provided with a plurality of light transmission holes, and the light transmission holes correspond to the L ED arrangement area.
8. The vehicle-mounted touch display device according to claim 7, wherein the cross-sectional area of the light hole is 0.8-1.4 times that of an L ED arrangement area.
9. The vehicle-mounted touch display device according to claim 7 or 8, wherein: and a scattering layer is arranged on the inner side of the light hole and is a white or gray ink layer or a photosensitive resin coating.
10. The vehicle-mounted touch display device according to claim 9, wherein a micro lens is arranged between the scattering layer and the L ED arrangement area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010365602.2A CN111399698A (en) | 2020-04-30 | 2020-04-30 | Vehicle-mounted touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010365602.2A CN111399698A (en) | 2020-04-30 | 2020-04-30 | Vehicle-mounted touch display device |
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| Publication Number | Publication Date |
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| CN111399698A true CN111399698A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010365602.2A Pending CN111399698A (en) | 2020-04-30 | 2020-04-30 | Vehicle-mounted touch display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114710876A (en) * | 2022-04-22 | 2022-07-05 | 惠州市艾比森光电有限公司 | LED display module, preparation method thereof and electronic equipment |
-
2020
- 2020-04-30 CN CN202010365602.2A patent/CN111399698A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114710876A (en) * | 2022-04-22 | 2022-07-05 | 惠州市艾比森光电有限公司 | LED display module, preparation method thereof and electronic equipment |
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