CN213303006U - Touch display device - Google Patents
Touch display device Download PDFInfo
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- CN213303006U CN213303006U CN202022013171.1U CN202022013171U CN213303006U CN 213303006 U CN213303006 U CN 213303006U CN 202022013171 U CN202022013171 U CN 202022013171U CN 213303006 U CN213303006 U CN 213303006U
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Abstract
The utility model provides a touch-control display device, includes capacitive touch screen and display screen, and capacitive touch screen sets up in the outside of display screen and laminates each other, and capacitive touch screen includes glass substrate and sets up the touch-control circuit layer in its inboard. The capacitive touch screen further comprises a extinction layer assembly, wherein the extinction layer assembly is clamped between the touch circuit layer and the glass substrate and comprises a first extinction layer and a second extinction layer, the first extinction layer covers the inner side face of the glass substrate, the average light transmittance of the first extinction layer is less than 5%, the first extinction layer is provided with a plurality of light holes, and the light holes correspond to the positions of the LED arrangement areas; the second extinction layer covers the inner side face of the first extinction layer, and the light transmittance of the second extinction layer is less than 80%. The touch display device not only can greatly eliminate the reflected light of the touch circuit layer to 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 utility model relates to a touch-control display module, concretely relates to touch-control display device.
Background
The touch display device can be 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a touch-control display device is provided, this kind of touch-control display device not only can eliminate the reverberation on touch-control circuit layer by a wide margin, reaches the screen effect that is close pure black, and preparation simple process reduces the degree of difficulty that capacitive touch screen made moreover by a wide margin. The technical scheme is as follows:
the utility model provides a 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 extinction layer assembly, the extinction layer assembly is clamped between the touch circuit layer and the glass substrate and comprises a first extinction layer and a second extinction layer, the first extinction layer covers the inner side face of the glass substrate, the average light transmittance of the first extinction layer is less than 5%, the first extinction layer is provided with a plurality of light holes, and the light holes correspond to the LED arrangement areas; the second extinction layer covers the inner side face of the first extinction layer, and the light transmittance of the second extinction layer is less than 80%.
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 combination and the touch circuit layer form a display area of the touch display device. When the ambient light irradiates the display area of the touch display device, the ambient light penetrates through the glass substrate, the extinction layer combination is reflected on the film layer of the touch circuit layer, and then sequentially penetrates through the extinction layer combination and the glass substrate to come out, the ambient light is obviously weakened (at least 90 percent weakened) through the extinction layer combination twice, the reflected light of the touch circuit layer is greatly eliminated, and the 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 is greatly reduced.
The light holes are hollowed holes formed by the first extinction layer through patterning, light of each LED is mainly emitted through the corresponding light hole, the light of the LED in the light hole is only absorbed by the second extinction layer, and the light transmittance of the second extinction layer is higher, so that the display brightness can be improved; because the first extinction layer has very little influence on the light emission of the LED, the first extinction layer can adopt a lower light transmittance design (even completely opaque) so as to eliminate the reflection of the touch circuit layer in a non-LED arrangement area; the design can not only improve the display brightness, but also effectively reduce the reflection of the touch circuit layer.
The light transmittance of the first matte layer refers to the transmittance of the first matte layer film layer itself (not involving the light-transmitting holes), and the average transmittance refers to the overall average transmittance of the first matte layer plus the light-transmitting holes.
Because the touch circuit layer is manufactured on the extinction layer combination, in order to ensure the flatness of the extinction layer combination (and further ensure the accurate graph of the touch circuit layer), in a preferred scheme, the extinction layer combination 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 overall thickness of the combination of extinction layers is 0.5 μm-4 μm.
Considering that the extinction layer combination also reduces the transmittance of the capacitive touch screen, the display screen is preferably a flat panel display, and the highest screen brightness is more 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 (LEDs) directly serving as pixels (or sub-pixels), and the pixels of the display are directly formed by the LEDs, so that the brightness of the display is extremely high, and the display can more easily reach high brightness of more than 1000 nit. In a more preferable scheme, the display screen is a micro LED or mini LED display, an LED arrangement area is defined in a pixel area of the display screen, the area ratio of the LED arrangement area to the pixel area is less than or equal to 50%, and LEDs of the display are arranged in the LED arrangement area. The LED arrangement area of each pixel may be provided with several LEDs, especially different color LEDs, to form a color display.
In a further more preferable scheme, the cross-sectional area of the light hole is 0.8-1.4 times of that of the LED arrangement area. Specifically, the cross-sectional area of the light transmission holes can be controlled, so that the average light transmission rate of the combination of the extinction layers is less than 30%.
In order to improve the angle (and color mixture) of the LED light emitted from the light hole(s), a scattering layer is disposed inside the light hole(s), and the scattering layer is a white or gray ink layer or a photosensitive resin coating. The scattering layer forms a pattern block covering the inner side of the light hole in a printing or exposure and development mode.
In order to increase the display brightness or reduce the area of the light-transmitting hole, it is still further preferable that a micro lens is disposed between the scattering layer and the LED arrangement region. The micro lens can converge the light emitted by the corresponding LED to the corresponding scattering layer, so that the display brightness of the micro lens is improved; or the area of the light-transmitting hole is reduced, and the reflection is further reduced.
The utility model discloses a touch-control display device is through setting up the extinction layer combination between touch-control circuit layer and glass substrate, this extinction layer combination can eliminate the reverberation on touch-control circuit layer by a wide margin when ambient light shines touch-control display device's display area, can reach and be close pure black screen effect, and because in this kind of touch-control display device, the touch-control circuit layer of capacitive touch screen need not to adopt complicated anti-reflection design can realize the low reflection, its manufacturing process is simple, and the reverberation colour that is difficult to eliminate can not appear, reduce the degree of difficulty that capacitive touch screen made by a wide margin.
Drawings
Fig. 1 is a schematic structural diagram of a first preferred embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a table of reference of the sizes of pixels, LED arrangement regions, LEDs, and light transmission holes of the first embodiment in the case where the average light transmittance of the extinction layer is 8%.
Fig. 4 is a schematic structural diagram of a second preferred embodiment of the present invention.
Detailed Description
Example one
As shown in fig. 1, the touch display device includes a capacitive touch screen 1 and a display screen 2, wherein the capacitive touch screen 1 is disposed outside the display screen 2 and attached to each other; the capacitive touch screen 1 includes a glass substrate 11, a touch circuit layer 12 disposed inside thereof, and a extinction layer assembly 13, the extinction layer assembly 13 being interposed between the touch circuit layer 12 and the glass substrate 11.
As shown in FIG. 2, the display screen 2 is a micro LED or mini LED display, the highest screen brightness is greater than 1000nit, an LED arrangement area 22 is defined in the pixel area 21, the area ratio of the LED arrangement area 22 to the pixel area 21 is less than or equal to 50%, and the LEDs of the display are arranged in the LED arrangement area 22. The LED arrangement region 22 of each pixel may be provided with several LEDs 221, especially LEDs 221 of different colors, to form a color display.
The extinction layer combination 13 comprises a first extinction layer 131 and a second extinction layer 132, the first extinction layer 131 covers the inner side face of the glass substrate 11, and the average light transmittance of the first extinction layer 131 is less than 5%; the first light eliminating layer 131 is provided with a plurality of light holes 1311, the light holes 1311 correspond to the LED arrangement area 22 in position, and the cross section area of each light hole 1311 is 0.8-1.4 times of that of the LED arrangement area 22;
the second matte layer 132 covers the inner side surface of the first matte layer 131 (including the inner side surface of the light transmission hole 1311), and the light transmittance of the second matte layer 132 is less than 80%.
Each light hole 1311 is a hollow hole formed by patterning the first matte layer 131, light emitted by each LED 221 mainly passes through the corresponding light hole 1311, the light emitted by the LED 221 in the light hole 1311 is absorbed only by the second matte layer 132, and the light transmittance of the second matte layer 132 is relatively high, so that the display brightness can be improved; since the first extinction layer 131 has very little influence on the light emission of the LED 221, the first extinction layer 131 can adopt a lower light transmittance design (even completely opaque) to eliminate the reflection of the touch circuit layer 12 in the non-LED arrangement region 22; the design can not only improve the display brightness, but also effectively reduce the reflection of the touch circuit layer 12.
In this embodiment, the thickness of the extinction layer combination 13 is 0.5 μm-4 μm.
When the ambient light irradiates the display area of the touch display device, the ambient light penetrates through the glass substrate 11, the extinction layer combination 13 reflects on the film layer of the touch circuit layer 12, and then sequentially penetrates through the extinction layer combination 13 and the glass substrate 11 to come out, and the ambient light is obviously weakened (at least weakened by 90%) through the extinction layer combination 13 twice, so that the reflected light of the touch circuit layer 12 is greatly eliminated, and the screen effect close to pure black is achieved.
In the present embodiment, the cross-sectional area of the light-transmitting hole 1311 can also be controlled so that the average light transmittance of the extinction layer assembly 13 is less than 30% (see the specific scheme of fig. 3, the light transmittance of the second extinction layer 132 is 40%, the light transmittance of the first extinction layer 131 is approximately equal to 0, the area ratio of the final LED arrangement region 22 to the pixel is 12%, and the average light transmittance of the extinction layer assembly 13 is 8%).
Example two
Referring to fig. 4, in the case where the other portions are the same as those of the embodiment, the difference is that:
in this embodiment, the capacitive touch panel 1 and the display panel 2 may be fixed to each other by frame attachment (i.e., attaching only one turn around the capacitive touch panel 1 and the display panel 2) with an air layer interposed therebetween.
In this embodiment, the scattering layer 31 is disposed inside the light hole 1311, and the scattering layer 31 is a white or gray ink layer or a photosensitive resin coating; the outer side of the display screen 2 is provided with a transparent isolation layer 32, the outer side of the transparent isolation layer 32 is provided with a SiO2 film 33, the outer side of the SiO2 film 33 is provided with a micro lens 34 (the micro lens 34 is formed by coating a photosensitive resin coating, patterning into circular dots, heating and melting to form a lens shape), and the micro lens 34 is positioned between the scattering layer 31 and the LED arrangement region 22. The scattering layer 31 forms a pattern block covering the inner side of the light transmission hole 1311 by printing or exposure and development; the lens layer 34 can concentrate the light emitted by the corresponding LED 221 onto the corresponding scattering layer 31, thereby improving the brightness of the display; or the area of the light transmitting hole 1311 is reduced, further reducing reflection.
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 all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The utility model provides a 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 display screen is a micro LED or mini LED display with LEDs directly used as pixels or sub-pixels, and an LED arrangement area is defined in a pixel area of the display screen;
the capacitive touch screen further comprises a extinction layer assembly, the extinction layer assembly is clamped between the touch circuit layer and the glass substrate and comprises a first extinction layer and a second extinction layer, the first extinction layer covers the inner side face of the glass substrate, the average light transmittance of the first extinction layer is less than 5%, the first extinction layer is provided with a plurality of light holes, and the light holes correspond to the LED arrangement areas; the second extinction layer covers the inner side face of the first extinction layer, and the light transmittance of the second extinction layer is less than 80%.
2. The touch display device of claim 1, wherein: the extinction layer is a black or dark photosensitive resin coating.
3. The touch display device of 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. A touch-sensitive display device according to claim 2 or 3, wherein: the thickness of the combination of extinction layers is 0.5 μm-4 μm.
5. The touch display device of 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 touch display device of claim 5, wherein: the area ratio of the LED arrangement area to the pixel area is less than or equal to 50%, and the LEDs of the display are arranged in the LED arrangement area.
7. The touch display device of claim 6, wherein: the cross-sectional area of the light holes is 0.8-1.4 times of that of the LED arrangement area.
8. The touch display device of claim 6, 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.
9. The touch display device of claim 8, wherein: and a micro lens is arranged between the scattering layer and the LED arrangement area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022013171.1U CN213303006U (en) | 2020-09-15 | 2020-09-15 | Touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022013171.1U CN213303006U (en) | 2020-09-15 | 2020-09-15 | Touch display device |
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| Publication Number | Publication Date |
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| CN213303006U true CN213303006U (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022013171.1U Active CN213303006U (en) | 2020-09-15 | 2020-09-15 | 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 |
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2020
- 2020-09-15 CN CN202022013171.1U patent/CN213303006U/en active Active
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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