WO2022091310A1 - Touch panel integrated led panel - Google Patents

Abstract

The present invention provides a touch panel integrated LED panel that can achieve high luminance display, high quality display, weather resistance, longer life, and a reduction in thickness at the same time, and ensures safety at the time of driving, the quality of displayed information, and aesthetic properties relating to the reduction in thickness at the same time when installed on a front windshield or other such parts of an automobile. In this invention, the bottom surface of a touch panel is attached to a surface corresponding to a space on the light-emitting surface side of an LED light-emitting substrate and the LED light-emitting substrate, which is constructed by arranging first LEDs in longitudinal and lateral directions, the first LEDs each integrating LED chips that emit red light, blue light, and green light, and a control unit that controls light emission of the LED chips. Alternatively, the bottom surface of a touch panel is attached to a surface corresponding to a space on the light-emitting surface side of an LED light-emitting substrate and the LED light-emitting substrate, which is constructed by arranging second LEDs in longitudinal and lateral directions, the second LEDs each being a surface mount type LED or a bullet type LED in which LED bare chips that emit red light, blue light, and green light are mounted.

Description

Touch panel integrated LED panel

The present invention relates to the display field, and particularly to a transparent flexible LED panel having a touch sensor function.

The transparent flexible display with a touch panel allows you to see the scenery and the scene behind the display due to the transparency of the display while looking at the information displayed on the display.
For example, if the transmittance of the display is high, even if a transparent flexible display with a touch panel is provided on the windshield of an automobile or the like, safe driving is possible.
If the glass is flexible, it can be attached to the display and the glass without gaps even if the glass is curved, so uneven air layers and wrinkles can be prevented, and locally different refraction layers of light do not occur. There is no adverse effect on driving because there is no distortion of the scenery / scene seen through information or the display, and fine spots on the display.
If there is a touch sensor function, the driver can display the desired screen or operate ancillary equipment by touching the operation surface of the touch panel, so information retrieval related to efficient driving to the destination and driving can be performed. Is possible while driving.

However, in order to drive a car, when a transparent flexible display with a touch panel is attached to a windshield, for example, high transparency is required to ensure safety. Further, when displaying information on a display, it is necessary to display it with high quality even outdoors, so that a high-luminance display is required. If the windshield or other interior glass is curved, it needs to be flexible enough to fit the display and the glass without any gaps, and it is thin to be integrated with the curved glass. Improvement of design is required.
Furthermore, since automobiles are often exposed to sunlight, displays attached to windshields and the like are required to have strong resistance to ultraviolet rays and temperature, and are also required to have a long life. In addition, a touch sensor function is also essential to improve operating efficiency.
However, liquid crystal panels and organic EL panels currently used as flat panel displays cannot simultaneously exhibit these functions.

FIG. 21 shows a cross-sectional view and a plan view of a conventional liquid crystal panel with a touch panel. Reference numeral 131 is a schematic cross-sectional view of a liquid crystal panel with a touch panel. Reference numeral 132 indicates a color filter pattern (plan view). Reference numeral 133 is a display pixel (plan view) of the liquid crystal panel.
The main constituent members of the liquid crystal panel 134 are a surface glass 135, a color filter 136, a liquid crystal cell 137, a backlight 138, and a bottom glass 139.
The liquid crystal panel 134 is provided with a polarizing plate (not shown) because it is a method of visualizing display information by using an optical modulation method. However, since the transmittance is reduced to about 1/2 by providing the polarizing plate, the backing is performed. Even if the brightness of the light 138 is high, the brightness is reduced to 1/2 just by passing through the polarizing plate, which makes high-brightness display difficult. Further, since the size of the pattern 132 of the color filter is designed to have a sufficiently large area in order to improve the light utilization efficiency, the transparency of the touch sensor formed on the touch panel 140 provided directly above the liquid crystal panel 134 is transparent. Since the electrode (not shown) overlaps with the position of the color filter 136 having a large pattern size, if the transmittance of the transparent electrode is T%, the brightness of the display pixel 133 of the overlapping liquid crystal panel also decreases by T%. Therefore, the display quality outdoors in the sunlight is deteriorated.
Further, when the conventional liquid crystal panel with a touch panel shown in FIG. 21 is attached to the windshield of an automobile or the like, it is desired to make it as thin as possible. Since it has a closed structure, the use of two pieces of glass imposes restrictions on thinning.

FIG. 22 shows a cross-sectional view and a plan view of a conventional organic EL panel with a touch panel. Reference numeral 151 schematically shows a cross-sectional view of an organic EL panel with a touch panel. Reference numeral 152 indicates a pixel pattern (plan view) of the RGB light emitting layer. Reference numeral 153 indicates a display pixel (plan view) of the organic EL panel.
The main constituent members of the organic EL panel 154 are a surface glass 155, an RGB light emitting layer 156, and a bottom glass 157. Since the organic EL panel 154 is a self-luminous type in which the RGB light emitting layer 156 emits light when a DC voltage is applied to both ends, it is generally unnecessary to provide a color filter unlike a liquid crystal panel, so that the light utilization efficiency is high. However, since the RGB light emitting layer 156 uses an organic EL material, the light emitting efficiency is low, and when it is provided on the windshield of an automobile, if the organic EL panel is exposed to external light, the contrast is deteriorated and the display quality is greatly deteriorated. If the brightness of the RGB light emitting layer 156 is increased in order to increase the contrast, the temperature of the RGB light emitting layer 156 becomes high, which causes deterioration of characteristics and shortens the life.

Further, since the pattern 152 of the RGB light emitting layer is designed to have a sufficiently large area in order to increase the light emitting brightness of the RGB light emitting layer 156, it is formed on the touch panel 158 provided directly above the organic EL panel 154. Since the transparent electrode (not shown) of the touch sensor overlaps with the position of the RGB light emitting layer 156 having a large pattern size, assuming that the transmission rate of the transparent electrode is T%, the display pixel 153 of the organic EL panel at the overlapping portion. Since the brightness is reduced by T%, the quality display outdoors in the sunlight is lowered.
Further, since the RGB light emitting layer 156 uses an organic EL material, its resistance to ultraviolet rays and temperature is weak, and there is a problem in extending its life.
Further, when the conventional organic EL panel with a touch panel shown in FIG. 22 is attached to the windshield of an automobile or the like, it is desired to make it as thin as possible, but due to the structure of the organic EL panel 154, glass is provided on both sides of the front glass 155 and the bottom glass 157. Since the structure is completely sealed, the use of two pieces of glass imposes restrictions on thinning.

Further, according to Patent Document 1, a structure is presented in which one substrate constituting an organic EL panel and one substrate constituting a touch panel portion are used as a common substrate to reduce the thickness and weight of the organic EL. Panels have problems of high-brightness display, weather resistance, and long life. For example, it is difficult to apply them in the in-vehicle field where high-brightness display, weather resistance, and long life are strongly required. The use of LEDs (light emitting diodes) that enable high-brightness display, weather resistance, and long life is suitable for the in-vehicle field, but in the structure of Patent Document 1, a transparent electrode (anode) is provided on the display side of the common substrate. Since it is provided, there is a problem that the LED cannot be used for the display unit.

Japanese Patent Application Laid-Open No. 2003-296032

As described above, when a liquid crystal panel with a touch panel or an organic EL panel is provided on the windshield of an automobile, high-brightness display, weather resistance, long life, and thinning cannot be achieved at the same time. There were still problems with the quality and design of the product.
In view of such a situation, the present invention can simultaneously achieve high brightness display, high quality display, weather resistance, long life, and thinning, and when provided on the windshield of an automobile, safety and display information due to driving. It is an object of the present invention to provide a touch panel integrated LED panel that simultaneously realizes the quality and the design related to the thinning.

In order to solve the above problems, the touch panel integrated LED panel according to the first aspect of the present invention is the first in which an LED chip that emits light in red, blue, and green and a control unit that controls light emission of the LED chip are integrated. The lower surface of the touch panel is attached to the LED light emitting board formed by arranging the LEDs of the above in the vertical and horizontal directions and the surface of the LED light emitting board which is a space on the light emitting surface side. With such a configuration, the lower surface of the touch panel is bonded to the surface of the LED light emitting substrate which is the space on the light emitting surface side, which eliminates the need for the transparent substrate on the light emitting surface side of the LED light emitting substrate. The transparency of the LED panel integrated with the touch panel is improved, and even if it is installed on the windshield of an automobile, safe operation is possible.
Further, since the transparent substrate on the light emitting surface side of the LED light emitting substrate is not required, the touch panel integrated LED panel can be made thinner. As a result, even if it is attached to automobile glass, it is possible to have a structure that is integrated with the glass, so that the design can be improved.

In the touch panel integrated LED panel according to the second aspect of the present invention, a flat surface-mounted or bullet-shaped LED having an LED bare chip that emits light in red, blue, and green is used as the second LED, and the second LED is used as the second LED. The lower surface of the touch panel is attached to the LED light emitting board which is arranged vertically and horizontally and the surface which is the space on the light emitting surface side of the LED light emitting board. With such a configuration, the lower surface of the touch panel is bonded to the surface of the LED light emitting substrate which is the space on the light emitting surface side, which eliminates the need for the transparent substrate on the light emitting surface side of the LED light emitting substrate. The transparency of the LED panel integrated with the touch panel is improved, and even if it is installed on the windshield of an automobile, safe operation is possible.
Further, since the transparent substrate on the light emitting surface side of the LED light emitting substrate is not required, the touch panel integrated LED panel can be made thinner. As a result, even if it is attached to automobile glass, it is possible to have a structure that is integrated with the glass, so that the design can be improved.

The touch panel integrated LED panel according to the third aspect of the present invention is mounted in the vicinity of a drive TFT circuit in which an LED bare chip that emits light in red, blue, and green is previously formed on a transparent substrate, and the drive TFT circuit and electricity are mounted. The LED bare chip connected to the LED is a third LED, and the LED light emitting board configured by arranging the third LEDs in the vertical and horizontal directions and the surface of the LED light emitting board which is a space on the light emitting surface side. Stick the bottom of the touch panel together. With such a configuration, the lower surface of the touch panel is bonded to the surface of the LED light emitting substrate which is the space on the light emitting surface side, which eliminates the need for the transparent substrate on the light emitting surface side of the LED light emitting substrate. The transparency of the LED panel integrated with the touch panel is improved, and even if it is installed on the windshield of an automobile, safe operation is possible.
Further, since the transparent substrate on the light emitting surface side of the LED light emitting substrate is not required, the touch panel integrated LED panel can be made thinner. As a result, even if it is attached to automobile glass, it is possible to have a structure that is integrated with the glass, so that the design can be improved.

In the touch panel integrated LED panel of the present invention, it is preferable that the LED light emitting substrate and all the base substrates constituting the touch panel are transparent flexible substrates. With such a configuration, a transparent display can be realized, so that the scenery and the scene behind the display can be seen, and even if it is installed on the windshield of an automobile, safe driving becomes possible. .. Furthermore, because it is flexible, even if the windshield of the automobile is curved, it can be bonded to the display and the glass without gaps, so that uneven air layers and wrinkles can be prevented, which results in locally different refraction layers of light. Will not occur, so there will be no distortion of the scenery / scene seen through the display information or display, and points such as fine stains on the display will be eliminated, leading to safe driving of the car.

In the touch panel integrated LED panel of the present invention, the materials used for all the base materials of the LED light emitting substrate and the touch panel are polyimide (PI), polyethylene (PE), polypropylene (PP / OPP), and polyethylene as organic materials. Insulating materials such as terephthalate (PET), polyethylene naphthalate (PEN), vinyl chloride resin (PVC), polystyrene (PS / OPS), acrylic (AC), polycarbonate (PC), and triacetate (TAC) may be used. In particular, when a polyimide material having a heat resistance property of 200 ° C. or higher is used, the soldering temperature can be sufficiently raised, so that stable and strong soldering becomes possible and the reliability of the electric circuit system is improved. As a result, the resistance to vibration is improved, so that the life can be extended. Further, since the polyimide material has thermal durability against the process temperature for manufacturing the TFT circuit, a highly reliable TFT circuit can be manufactured by using the polyimide film. If the process temperature of the TFT circuit can be raised in this way, a material with high mobility can be used, so that a high-performance (highly reliable) TFT circuit can be obtained.

In the touch panel integrated LED panel of the present invention, the material used for all the base materials of the LED light emitting substrate and the touch panel is a glass having a thickness of 200 μm or less as an inorganic material in order to provide flexibility. Therefore, even if the glass is bent and stretched at 180 ° a plurality of times or more with respect to a rod having a curvature of 1 mm or more, cracks and cloudiness may not occur. With such a configuration, when a TFT circuit is manufactured on the surface of glass, the heat resistant temperature of the glass is high, so that a TFT circuit made of a low-temperature polysilicon transistor or an oxide semiconductor having excellent performance can be manufactured. As a result, a high-performance (highly reliable) TFT circuit can be obtained, so that high brightness and long life can be achieved.

In the touch panel integrated LED panel of the present invention, the chip size of the first LED, the chip size of the second LED, and the chip size of the third LED mounted on the LED light emitting board are S, respectively, and the first LED. Assuming that the length between the chips of the second LED, the length between the chips of the second LED, and the length between the chips of the third LED are P, respectively, when the S / P ratio is K, the square of K (K). The range of the value of ² ) may be 0.0025 ≤ K ² ≤ 0.96. With such a configuration, it is possible to increase the brightness and obtain high-quality display information even in a bright outdoor environment. In addition, high-definition wiring patterns for driving and high-density mounting of LED chips are possible, so that highly visible display information can be obtained.

In the touch panel integrated LED panel of the present invention, the chip size of the first LED, the chip size of the second LED, and the chip size of the third LED are S, respectively, and the length between the chips of the first LED is determined. When the length between the chips of the second LED and the length between the chips of the third LED are P, respectively, the transparent length L obtained by subtracting S from P is provided on the touch panel. When the width of the electrode and the width of the second electrode are c, the width of the first electrode and the width c of the second electrode are set so that the transparent length L ≧ c, and the width of the first electrode and the width of the second electrode are set to c. The second electrode may not overlap with the position of the LED chip mounted on the LED light emitting substrate. When the first electrode and the second electrode provided on the touch panel do not overlap with the positions of the first LED, the second LED, and the third LED, the first LED, the second LED, and the third LED are used. Since the light emitted from the LED reaches the display surface of the touch panel integrated LED panel without being blocked by the first and second electrodes, it should be displayed with high brightness while maintaining the brightness of each LED that emits high brightness. This enables high-quality display even outdoors in the sunlight.

In the touch panel integrated LED panel of the present invention, the LED chips used in the first LED, the second LED, and the third LED mounted on the LED light emitting substrate grow GaN crystals on the sapphire substrate. It may be an LED chip manufactured based on a P-type or n-type GaN semiconductor. With such a configuration, by touching the operation surface of the touch panel, desired information can be accurately displayed at the touched position. Further, if the transparent substrate on the uppermost surface of the touch panel is made of a transparent polyimide material, it also has chemical resistance, so that high reliability can be ensured and the life can be extended.

In the touch panel integrated LED panel of the present invention, a plurality of first electrodes (vertical direction) and a plurality of second electrodes (horizontal direction) provided on the touch panel are in an orthogonal state (lattice shape) while insulation is maintained. ), The first electrode is provided on the first substrate, the second electrode is provided on the second substrate, and the surface of the first substrate on which the first electrode is provided and the second electrode are provided. A transparent adhesive is provided between the surfaces of the second substrate that is not provided, and a transparent adhesive is provided between the surface of the second substrate on which the second electrode is provided and the lower surface of the transparent substrate. It may be a touch panel formed by firmly adhering a substrate and a transparent substrate to each other with a transparent adhesive. With such a configuration, by touching the operation surface of the touch panel, desired information can be accurately displayed at the touched position. Further, if the transparent substrate is made of a transparent polyimide material, it has chemical resistance and can extend the life.

In the touch panel integrated LED panel of the present invention, a plurality of first electrodes (vertical direction) and a plurality of second electrodes (horizontal direction) provided on the touch panel are in an orthogonal state (lattice shape) while insulation is maintained. ), The second electrode is provided on the lower surface of the transparent substrate, an adhesive layer using a transparent adhesive is formed on the surface thereof, and the first electrode is provided on the surface of the adhesive layer. , It may be a touch panel formed by providing a protective layer on the surface thereof. With such a configuration, by touching the operation surface of the touch panel, desired information can be accurately displayed at the touched position. Further, if the transparent substrate is made of a transparent polyimide material, it has chemical resistance and can extend the life.

In the touch panel integrated LED panel of the present invention, a distributed liquid crystal film having a variable transmittance or another film having a variable transmittance may be used for the base substrate of the LED light emitting substrate. With such a configuration, when it is desired to pay attention to the display screen, the LED light emitting substrate can be made opaque, so that the service desired to pay attention to the display screen can be used.

According to the touch panel integrated LED panel of the present invention, when it is provided on the windshield of an automobile or the like, high brightness display, high quality display, weather resistance, long life, and thinning can be achieved at the same time, so that safety by driving can be achieved. There are also effects such as the quality of display information and the designability related to thinning can be realized at the same time.

Cross-sectional view and plan view of touch panel integrated LED panel Image of a car using a touch panel integrated LED panel Configuration diagram of the first LED Longitudinal circuit diagram of the first LED Timing chart of the cascade circuit of the first LED Matrix configuration diagram of the first LED LED panel using the first LED Touch panel floor plan Partial cross section of touch panel Block diagram of the touch panel with control unit Partial cross section of touch panel Touch panel integrated LED panel using the first LED Touch panel integrated LED panel using the first LED LED panel using the second LED Touch panel integrated LED panel using the second LED Touch panel integrated LED panel using the second LED LED panel on which the third LED is not mounted LED panel using the third LED Touch panel integrated LED panel using the third LED Touch panel integrated LED panel using the third LED Cross-sectional view and plan view of a conventional LCD panel with a touch panel Cross-sectional view and plan view of a conventional organic EL panel with a touch panel

Hereinafter, an example of the embodiment of the present invention will be described in detail with reference to the drawings. The scope of the present invention is not limited to the following examples and illustrated examples, and many changes and modifications can be made.

FIG. 1 shows a cross-sectional view and a plan view of a touch panel integrated LED panel. The touch panel integrated LED panel 1 is composed of an LED light emitting substrate 2, an RGB LED chip 3 provided on the LED light emitting substrate 2, and a touch panel 4. Here, R is red, G is blue, and B is green.
The RGB LED chip 5 is a plan view of the RGB LED chip 3. The display surface 6 of the LED panel shows the display surface of the touch panel integrated LED panel 1 as viewed from above. As the chip size of each of the RGB LED chips 5, as shown on the display surface 6 of the LED panel, those having a size sufficiently smaller than the pixel sizes of the black pixel 7, the green pixel 8, and the white pixel 9 are usually used. many. For example, the total area of the three chip sizes of the RGB LED chip 5 is often 96% or less of the pixel area of the black pixels 7, the green pixels 8, and the white pixels 9 shown on the display surface 6 of the LED panel, but the display. Depending on the performance of, it will be about 0.25% to 96%.
For each of the RGB LED chips 5 used here, GaN crystals are grown on a sapphire substrate, and LED chips based on P-type and n-type GaN semiconductors are used.

The LED chip produced by growing GaN crystals on a sapphire substrate has high luminous efficiency and long life, and since the LED chip is made of an inorganic material, it is resistant to ultraviolet rays and heat even when exposed to strong sunlight. Has resistance.
Further, since the chip size of the RGB LED chip 5 is much smaller than the sizes of the black pixel 7, the green pixel 8, and the white pixel 9 on the display surface 6 of the LED panel, the touch panel 4 provided directly above the LED light emitting substrate 2 can be used. Since the positions of the transparent electrode (not shown) of the formed touch sensor and the RGB LED chip 5 can be prevented from overlapping, the light emitted from the RGB LED chip 5 is not blocked by the transparent electrode and is displayed on the display surface 6 of the LED panel. To reach. As a result, the RGB LED chip 5 that emits high-intensity light can be displayed at a brightness that maintains the brightness, so that high-luminance display is possible and high-quality display is possible even outdoors exposed to sunlight.

Further, the conventional liquid crystal panel with a touch panel shown in FIG. 21 and the conventional organic EL panel with a touch panel shown in FIG. 22 are completely provided with front glass and bottom glass on both sides due to the relationship between the display method, the material characteristics used, and the manufacturing process. Since it is an unsealed structure, it is difficult to reduce the thickness. However, as a structure in which the lower surface 50 of the touch panel 4 is attached to the surface of the LED light emitting substrate 2 provided with the RGB LED chip 3 which is the space 51. As a result, the transparent substrate on the light emitting surface side of the LED light emitting substrate 2 becomes unnecessary, and the transparency of the touch panel integrated LED panel 1 is improved.
Further, instead of the surface glass 135 of the liquid crystal panel with a touch panel and the surface glass 155 used for the organic EL panel touch panel with a touch panel, the lower surface 50 of the touch panel 4 is directly bonded to the surface of the LED light emitting substrate 2 which is the space 51. Therefore, it can contribute to thinning, and since impurities such as dust and dirt do not adhere to the RGB LED chip 3, it is possible to prevent a decrease in brightness.

The base base material 21 (see FIG. 3 or FIG. 7) of the LED light emitting substrate 2 in the touch panel integrated LED panel 1 of the present invention and the base base material constituting the touch panel 4 (transparent substrate 61, first substrate 65 in FIG. 8). , The second substrate 66) uses a transparent flexible substrate.
Materials for the transparent flexible substrate include polyimide (PI), polyethylene (PE), polypropylene (PP / OPP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), vinyl chloride resin (PVC), and polystyrene as organic materials. It is preferable to use an insulating material such as (PS / OPS), acrylic (AC), polycarbonate (PC), triacetate (TAC).
In particular, when a polyimide material having a heat resistance property of 200 ° C. or higher is used, the soldering temperature can be sufficiently raised, so that stable and strong soldering becomes possible and the reliability of the electric circuit system is improved. As a result, the resistance to vibration is improved, so that the life can be extended. Further, since the polyimide material has thermal durability against the process temperature for manufacturing a TFT (Thin Film Transistor) circuit, a highly reliable TFT circuit can be manufactured by using a polyimide film. If the process temperature of the TFT circuit can be raised in this way, a material having high mobility can be used, so that a high-performance (highly reliable) TFT circuit can be obtained.
The above-mentioned material has transparency and flexibility, and in particular, since the specific gravity of a film or sheet made of an organic material is as small as about 1, it is possible to realize a lightweight touch panel integrated LED panel 1.

As the inorganic material, it is preferable to use glass having a thickness of 200 μm or less in order to provide flexibility. For example, by using the touch panel integrated LED panel 1 that does not cause cracks or cloudiness even if the glass is bent and stretched at 180 ° multiple times for a rod having a curvature of 1 mm or more, a TFT circuit can be formed on the surface of the glass. In the case of manufacturing, since the heat resistant temperature of glass is high, it is possible to manufacture a TFT circuit using a low-temperature polysilicon transistor or an oxide semiconductor having excellent performance. As a result, a high-performance (highly reliable) TFT circuit can be obtained, so that high brightness and long life can be achieved.
Further, as the LED light emitting substrate 2, a distributed liquid crystal film having a variable transmittance or another film having a variable transmittance may be used for the base substrate 21 of the LED light emitting substrate 2. By using these films for the touch panel integrated LED panel 1, the LED light emitting substrate 21 can be made opaque when it is desired to pay attention to the display screen, so that the service desired to pay attention to the display screen can be used.

By realizing such a touch panel integrated LED panel 1, the following effects can be obtained.
1) While looking at the information displayed on the display, the transparency of the display allows you to see the scenery behind the display.
2) The realization of a highly transparent display enables safe driving even if it is installed on the windshield of an automobile.
3) Since it is flexible, even if the windshield of the automobile is curved, it can be attached to the display and the glass without gaps, so uneven air layers and wrinkles can be prevented, and locally different refraction layers of light can be obtained. Since it does not occur, there is no effect on driving because there are no points such as display information, distortion of the scenery / scene seen through the display, and fine stains on the display. Moreover, since a flexible film is used, the weight can be reduced.
4) With the touch sensor function, the driver can display the desired screen or operate ancillary equipment by touching the operation surface of the touch panel, which enables efficient driving and driving to the destination. Information retrieval related to it becomes possible while driving.
5) The touch panel integrated LED panel 1 uses a transparent polyimide material that is highly resistant to ultraviolet rays and temperature, so that it can have a long life, and can be used by attaching it to the windshield of an automobile exposed to sunlight. Suitable for applications.
6) Since a GaN crystal is grown on a sapphire substrate and an LED chip based on a P-type or n-type GaN semiconductor is used, high-efficiency light emission can be achieved and low power consumption can be realized.

FIG. 2 is an example of application to an automobile using the touch panel integrated LED panel 1.
In FIG. 2A, the automobile 10 has a box-shaped outer shape, four corners are columns for increasing mechanical strength, and the other surfaces are made of a transparent body 11 using transparent resin or transparent glass. Has been done.
The touch panel integrated LED panel 1 of the present invention is attached to the transparent body 11 on the inner surface of the transparent body 11, and the outside scenery and the scene can be seen from the inside of the vehicle while viewing the information displayed on the display. ..
In addition, since it has a touch panel function, various services can be provided from inside the vehicle.
Since the touch panel integrated LED panel 1 is constructed by using a material having strong resistance to ultraviolet rays and temperature, it has weather resistance to ultraviolet rays and temperature and has long life characteristics. Therefore, FIG. 2 (a) ), Even if it is attached to the transparent body 11 exposed to sunlight, it is possible to provide highly reliable display information for a long period of time.

FIG. 2B is an application example of another automobile 12, and shows an example in which the touch panel integrated LED panel 1 of the present invention is attached to the entire inside of the windshield 13. In particular, since there are displays on most of the omnidirectional surfaces in front of the driver, you can see the LED panel on the large screen in an environment where you are watching the LED panel during breaks when the car is stopped. It can be expected to heal the tiredness of driving a car. Of course, since the display is provided on the entire inside of the windshield 13, it is possible to enjoy the displayed information by displaying the information on a small screen at a specific place, for example, the right end or the left end.

FIG. 2C is an application example of another automobile 14, and shows an example in which the touch panel integrated LED panel 1 of the present invention is attached to the entire glass in the vehicle. This is an example in which the touch panel integrated LED panel 1 of the present invention is attached to the windshield 13, the front door glass 15, the rear door glass 16, the back door glass 17, and the sunroof glass glass 18. Since the display information is displayed in all directions, it is possible to create an environment in which the space displayed by the plurality of touch panel integrated LED panels 1 is displayed. By providing the touch panel integrated LED panel 1 in all directions in the vehicle in this way, new services can be expected.

Next, the RGB LED chip 3 mounted on the LED light emitting substrate 2 constituting the touch panel integrated LED panel 1 will be described with reference to FIG. The first LED 20 shown in FIG. 3 is a drive control type LED including an RGB LED chip 3 and a control unit 25.
On the surface of the LED light emitting substrate 2, a red LED 22, a blue LED 23, and a green LED 24 corresponding to the RGB LED chip 3 and a first LED 20 in which the control unit 25 is incorporated into one package and sealed are mounted (1). ) Is a plan view, (2) is a sectional view taken along the line AA, and (3) is a sectional view taken along the line BB. As shown in the plan view (1) of FIG. 3, a set of three LEDs, a red LED 22, a blue LED 23, and a green LED 24, becomes one pixel, which is the smallest unit constituting the display screen of the display. The LED light emitting substrate 2 in which the first LED 20 is two-dimensionally mounted vertically and horizontally on a transparent flexible substrate is an LED panel (display).

Here, the base substrate 21 of the LED light emitting substrate 2 has polyimide (PI), polyethylene (PE), polypropylene (PP / OPP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and vinyl chloride resin (PVC) as organic materials. ), Polystyrene (PS / OPS), acrylic (AC), polycarbonate (PC), triacetate (TAC) and other insulating materials are used. In particular, when a copper foil electrode pattern is formed on the base substrate 21 and the first LED 20 is soldered to a high temperature, it is preferable to use a polyimide material having a heat resistance property of 200 ° C. or higher. As the inorganic material, it is preferable to use glass having a thickness of 200 μm or less in order to provide flexibility. For example, it is preferable that the glass is thin so that cracks and cloudiness do not occur even if the glass is bent and stretched 100 times or more at 180 ° with respect to a rod having a curvature of 1 mm or more.
In this embodiment, the first LED 20 uses WS2812 sold as a product by WorldSemi. Further, WS2822S may be used.
When a display signal transmitted from the display signal generator 34 (described in FIG. 4) is applied to the input terminal 27 of the first LED 20, the control unit 25 performs processing corresponding to a predetermined signal protocol, respectively. A light emitting signal 28 is sent to the LED of the light emitting signal 28, and each LED illuminates with a brightness corresponding to the information of the light emitting signal 28. From the output terminal 29 of the control unit 25, a display signal corresponding to the first LED 20 (not shown) prepared in the next stage is output.

FIG. 4 is an example of an LED light emitting substrate 2 configured by using four first LEDs 20.
FIG. 5 is a timing chart 40 of display data given to each input terminal of the control units 25 (a1 to a4) provided in the four first LEDs 20 shown in FIG.
As shown in FIGS. 4 and 5, the display signal 41 sent from the display signal generator 34 is applied to the input terminal 27 (a1) of the control unit 25 (a1) through the input terminal 32 of the LED light emitting board 2. The display signal 41 sent out from the display signal generator 34 is the pixel data 45 of the control unit 25 (a1), the pixel data 46 of the control unit 25 (a2), and the pixel data 47 of the control unit 25 (a3) in chronological order. It is the pixel data 48 of the control unit 25 (a4). The pixel data 45 of the control unit 25 (a1), the pixel data 46 of the control unit 25 (a2), the pixel data 47 of the control unit 25 (a3), and the pixel data 48 of the control unit 25 (a4) are each a green LED 24, respectively. It has a total of 24 bits of information, 8 bits each as the brightness information of the blue LED 23 and the red LED 22, and 256 levels as the brightness information of each LED, and color information as three colors of green, blue, and red (256 to the third power). Can be expressed in 16 million colors. The a1 signal 41 applied to the input terminal 27 (a1) of the control unit 25 (a1) captures only the pixel data 45 of the control unit 25 (a1) in the control unit 25 (a1), and the green LED 24 and blue as light emission information. It is sent as a light emitting signal 28 to the LED 23 and the red LED 22. The a2 signal 42 is sent from the output terminal 29 of the control unit 25 (a1) to the control unit 25 (a2) in the next stage, but the pixel data 45 of the control unit 25 (a1) has already been processed in the a2 signal 42, so it should be removed. It has become a thing.

Hereinafter, by the same processing, the control unit 25 (a1), the control unit 25 (a2), the control unit 25 (a3), and the control unit 25 (a4) of the first LED 20 provided in four are respectively. By individually capturing the pixel data 45 of the control unit 25 (a1), the pixel data 46 of the control unit 25 (a2), the pixel data 47 of the control unit 25 (a3), and the pixel data 48 of the control unit 25 (a4). The green LED 24, the blue LED 23, and the red LED 22 built in each control unit (25 (a1) to 25 (a4)) illuminate with brightness corresponding to each signal. In this way, the four pixels of the pixel data 45 of the control unit 25 (a1), the pixel data 46 of the control unit 25 (a2), the pixel data 47 of the control unit 25 (a3), and the pixel data 48 of the control unit 25 (a4). The data forms one block of cycle data 49. If the screen to be displayed is a still image, the same cycle data 49 may be repeatedly sent from the display signal generator 34, and if it is desired to display a moving image, the cycle data 49 sequentially changed from the display signal generator 34 is emitted by LED. It may be given to the substrate 2.
In this way, the number of WS2812 used corresponding to the first LED 20 (4 in FIG. 4) and the number of pixel data constituting the cycle data 49 transmitted from the display signal generator 34 (4 in FIG. 5) are calculated. By making them the same, the first LED 20 can normally display the intended information.

FIG. 6 is a diagram showing an LED light emitting substrate 2 in which four first LEDs 20 are arranged side by side in the horizontal direction and the vertical direction. In this case, the LED panel uses 16 first LEDs 20.
In FIGS. 4 and 5, the number of used first LEDs 20 (4 in FIG. 4) and the number of pixel data constituting the cycle data 49 transmitted from the display signal generator 34 (4 in FIG. 5) are the same. As explained above, the LED light emitting substrate 2 can normally display the intended information. Since the number of the first LED 20 used is 16 in FIG. 6, the first LED 20 is used. By setting the number of pixel data to be input to the input terminal 27 of the control unit 25 (a1) to 16 as well, normal display becomes possible.

FIG. 7 is an example of an LED light emitting substrate 2 (LED panel) using 16 first LEDs 20 as in FIG. 6.
Here, the case where the size of the chip size of the first LED 20 is sufficiently smaller than the length between the chips of the first LED 20 in both the horizontal direction and the vertical direction is shown. Assuming that the chip size of the first LED 20 is S and the length between the chips of the first LED 20 is P, the smaller the S / P ratio K, the more the transparent portion of the LED light emitting substrate 2 becomes, and the transparency is increased. become.
Here, assuming that the chip size S of the first LED 20 is 100 μm or less (S ≦ 100) is a micro LED, 100 μm <S ≦ 1,000 μm is a mini LED, and 1,000 μm <S is a small LED, the micro LED is a smartphone or tablet. , Mini LED is often used in the field of PC, TV, signage, and small LED is often used in the field of huge TV (large screen display).
In the case of a smartphone, although it depends on the screen size, when the number of horizontal pixels is 8K, the length P between the chips of the first LED 20 becomes about 20 μm. On the other hand, the chip size S of the first LED 20 can be 1 μm due to technological progress. In this case, the S / P ratio K is 0.05 (1/20).
Since this value is the square of K (K ² ) in terms of area ratio, the area ratio K ² is 0.0025.

Next, assuming that the length P between the chips of the first LED 20 is 20 μm and the chip size S of the first LED 20 is 19 μm, the S / P ratio K is 0.95 (19/20).
Here, the concern that the ratio K becomes small is that the display brightness of the LED light emitting substrate 2 (LED panel) becomes low, but since the smartphone is often used indoors, the display quality is ensured and the LED Since the luminous efficiency is advancing day by day, it can be expected that the concern about display brightness will be resolved.

For a huge television (large screen display), when the number of horizontal pixels is 8K, the length P between the chips of the first LED 20 is 0.5 mm or more, although it depends on the screen size. On the other hand, it is assumed that the chip size S of the first LED 20 uses a 0.1 mm mini LED. In this case, the S / P ratio K is 0.2 (0.1 / 0.5).
The length P between the chips of the first LED 20 is 0.5 mm, the chip of the first LED 20 that can be used due to the high-definition wiring pattern width for driving and the position accuracy for high-density mounting of the first LED chip. Since the maximum width of the size S is about 0.49 mm, the S / P ratio K is 0.98 (0.49 / 0.5). The area ratio is K squared (K ² ), so the area ratio K ² is 0.96.
As described above, LEDs have a small screen size such as smartphones and tablets, medium screens such as PCs, TVs and signages, and large screens such as huge TVs (large screen displays). The magnitude of the transparency of the light emitting substrate 2 is a trade-off with the magnitude of the S / P ratio K, but by setting the magnitude of the ratio K to 0.98 or less (K ≦ 0.98), the LED The light emitting substrate 2 (LED panel) can obtain light emitting brightness having visibility and can also secure transparency.
As described above, the preferred range of use of the area ratio K2 in the touch panel integrated LED panel ¹ is 0.0025 at the minimum value and 0.96 at the maximum value.

The present invention describes the first LED 20 including the control unit 25 in the LED, but the second LED shown in FIG. 14 and the second LED including only the LED not including the control unit 25, and as shown in FIG. The same idea can be applied to the third LED using the TFT circuit.

Next, the configuration of the touch panel will be described. 8 is a plan view of the touch panel 4, FIG. 9 is a partial cross-sectional view of the touch panel 4 (AA cross-sectional view of FIG. 8), and FIG. 10 is a block diagram of a touch panel with a control unit.
As shown in FIGS. 8 and 9, the touch panel 4 has a plurality of first electrodes 62 (vertical direction) and a plurality of second electrodes 63 (horizontal direction) in an orthogonal state (lattice shape) in a state where insulation is maintained. It is provided in. Since the first electrode 62 and the second electrode 63 are provided at right angles in this way, the intersection portion thereof has a structure in which a capacitor is formed.
Note that, for example, in FIGS. 12, 14, and 18, the numbers of the first LED, the second LED, and the third LED provided on the LED light emitting substrate 2 are four horizontally and four vertically, and therefore, in FIG. 8, FIG. The number of the first electrodes 62 is five, and the number of the second electrodes 63 is five.
Specifically, in the touch panel 4, the first electrode 62 is provided on the first substrate 65, and the second electrode 63 is provided on the second substrate 66. The first substrate 65 and the second substrate 66, and the transparent substrate 61 and the second substrate 66 are firmly adhered with the transparent adhesive 68.

Here, in order to make the touch panel 4 transparent and flexible, the transparent substrate 61, the first substrate 65, and the second substrate 66 are made of polyimide (PI), polyethylene (PE), polypropylene (PP / OPP) as organic materials. , Polyethylene terephthalate (PET), polyethylene naphthalate (PEN), vinyl chloride resin (PVC), polystyrene (PS / OPS), acrylic (AC), polycarbonate (PC), triacetate (TAC) and other insulating materials are used. In particular, the first electrode 62 and the second electrode 63 are etched using a chemical to prepare an electrode pattern of a copper foil, but it is preferable to use a polyimide material that is not affected by the chemicals for the etching treatment.
As the inorganic material, it is preferable to use glass having a thickness of 200 μm or less in order to provide flexibility. For example, it is preferable that the glass is thin so that cracks and cloudiness do not occur even if the glass is bent and stretched 100 times or more at 180 ° with respect to a rod having a curvature of 1 mm or more.
The first electrode 62 and the second electrode 63 each use a conductive material. As the conductive material, either a metal film or a transparent conductive film may be used.

Next, the operation of the touch panel will be described with reference to FIG.
As shown in FIG. 10, in the touch type input device 55, a drive pulse signal (not shown) is applied to the touch panel 4 and the first electrode 62 and the second electrode 63 of the touch panel 4, and the touch position on the surface of the transparent substrate 61 is reached. It is composed of a controller 71 that detects.
In this embodiment, a mutual capacitance method is adopted in which the touch position is detected by observing the magnitude of the charge / discharge current generated by changing the capacitance of the capacitor formed at the intersection of the first electrode 62 and the second electrode 63. are doing.
Specifically, the controller 71 includes a drive unit 72 connected to the five first electrodes (drive electrodes) 62, and a detection unit 73 and a drive unit 72 connected to the five second electrodes (sensor electrodes) 63. It is composed of a control unit 74 that controls the operation of the detection unit 73. The drive unit 72 generates a drive pulse signal (not shown) having a predetermined frequency based on the control signal from the control unit 74, and applies the drive pulse signal generated by selecting the first electrodes 62 one by one. do. The detection unit 73 selects the second electrode 63 one by one based on the control signal from the control unit 74, and the charge / discharge current flowing through the second electrode 63 according to the drive pulse signal applied to the first electrode 62. Is received as an output signal a. Further, the detection unit 73 detects a change in the capacitance of each capacitor based on the output signal a, and outputs a detection signal b indicating the amount of the change to the control unit 74. Then, the control unit 74 detects the touch position based on the detection signal b, and sends the position detection result to the LED light emitting board 2 (LED panel).

As shown in FIG. 1, such a touch panel 4 is bonded to a surface of an LED light emitting substrate 2 provided with an RGB LED chip 3 which is a space 51 with a first substrate 65 which is a lower surface 50 of the touch panel 4. The touch panel integrated LED panel 1 is realized by adopting the structure.
The present invention is a first substrate 65 which is a part of the configuration of the touch panel 4 without attaching a member such as the surface glass 135 of the liquid crystal panel with a touch panel or the surface glass 155 of the organic EL panel touch panel with a touch panel to the LED light emitting substrate 2. Can be directly attached to the surface of the LED light emitting substrate 2 which is the space 51, which contributes to thinning, and since impurities such as dust and dirt do not adhere to the RGB LED chip 3, it is possible to prevent a decrease in brightness. In addition, by reducing the number of constituent members, transparency is improved accordingly and high-quality display becomes possible.

FIG. 11 is a partial cross-sectional view of the touch panel 4 (AA cross-sectional view of FIG. 8), but unlike that of FIG. 9, the electrode structure has a structure that enables position detection by the OGS (One Glass Solution) method. ing.
The touch panel 4 is provided with the first electrode 82 and the second electrode 83 in an orthogonal state (lattice shape) in a state where insulation (corresponding to the transparent conductive material 84) is maintained. Since the first electrode 82 and the second electrode 83 are provided at right angles in this way, the intersection portion thereof has a structure in which a capacitor is formed.
Specifically, the touch panel 4 is provided with a second electrode 83 on the lower surface of the transparent substrate 81, an adhesive layer 84 using a transparent adhesive is formed on the surface thereof, and one surface of the adhesive layer 84 is smoothed. The first electrode 82 is provided on the surface thereof, and the transparent substrate 81, the second electrode 83, and the first electrode 82 are firmly adhered to each other by the adhesive layer 84, and are protected on the surfaces of the first electrode 82 and the adhesive layer 84. It is provided with layers.

Here, in order to give the touch panel 4 transparency and flexibility, the transparent substrate 81 is made of polyimide (PI), polyethylene (PE), polypropylene (PP / OPP), polyethylene terephthalate (PET), polyethylene naphthalate as organic materials. Insulating materials such as (PEN), vinyl chloride resin (PVC), polystyrene (PS / OPS), acrylic (AC), polycarbonate (PC), and triacetate (TAC) are used. The second electrode 83 formed on the lower surface of the transparent substrate 81 is etched with a chemical to form an electrode pattern of copper foil, but it is preferable to use a polyimide material that is not affected by the chemicals for the etching treatment. ..
As the inorganic material, it is preferable to use glass having a thickness of 200 μm or less in order to provide flexibility. For example, it is preferable that the glass is thin so that cracks and cloudiness do not occur even if the glass is bent and stretched 100 times or more at 180 ° with respect to a rod having a curvature of 1 mm or more.
The first electrode 82 and the second electrode 83 each use a conductive material. As the conductive material, either a metal film or a transparent conductive film may be used.

In this embodiment, since the intersection portion where the first electrode 82 and the second electrode 83 are in an orthogonal state forms a capacitor, the charge / discharge current generated by each change in the capacitance of each formed capacitor is generated. Detects the size and detects the touch position.
As shown in FIG. 1, such a touch panel 4 is provided with a protective layer 85, which is a lower surface 50 of the touch panel 4, attached to a surface of the LED light emitting substrate 2 provided with the RGB LED chip 3 which is a space 51. By adopting the structure, the touch panel integrated LED panel 1 is realized.

Since the touch panel structure of FIG. 11 eliminates the first substrate 65 and the second substrate 66 shown in FIG. 9, it is possible to improve the transparency and reduce the thickness as compared with the structure of FIG.
Here, the touch panel structure shown in FIGS. 9 and 11 has been described, but any structure having a function of detecting a touch position can be applied to the present invention.

FIG. 12 is a plan view of the touch panel integrated LED panel 1 in which the upper surface of the LED light emitting substrate 2 (LED panel) using the first LED 20 shown in FIG. 7 and the lower surface of the touch panel 4 shown in FIG. 8 are bonded together. ..
FIG. 12 shows a case where the size of the chip size of the first LED 20 described with reference to FIG. 7 is sufficiently smaller than the length between the chips of the first LED 20. As shown in FIG. 12, assuming that the chip size of the first LED 20 is S and the length between the chips of the first LED 20 is P, the transparent length L obtained by subtracting the chip size S from the length P is obtained. The larger the size, the higher the transparency of the LED light emitting substrate 2. That is, in order to sufficiently enhance the transparency of the LED light emitting substrate 2, assuming that the electrode widths of the width 91 of the first electrode and the width 92 of the second electrode are c, if the length L ≧ c, the LED light emitting substrate 2 The transparency can be made sufficiently high. Here, if the first LED 20 is provided at a position overlapping the first electrode 62 and the second electrode 63, the light emitted by the first LED 20 is obstructed by the electrodes of the first electrode 62 and the second electrode 63. Since the brightness of the LED panel 1 integrated with the minute touch panel is lowered, it is preferable to provide the first LED 20 at a position where it does not overlap with the first electrode 62 and the second electrode 63. That is, when the first electrode 62 and the second electrode 63 are not overlapped with the position of the first LED 20, the light emitted from the first LED 20 is not blocked by the first electrode 62 and the second electrode 63, and the touch panel is one. It reaches the display surface 6 (FIG. 1) of the body LED panel 1. As a result, since the first LED 20 that emits light with high brightness can be displayed with the brightness maintained, the high-luminance display becomes possible and the high-quality display becomes possible even outdoors exposed to sunlight.

In FIG. 13, the size S of the chip size of the first LED 20 described with reference to FIG. 12 is a transparent length obtained by subtracting the chip size S of the first LED 20 from the length P between the chips of the first LED 20. The case of almost the same size as L is shown. As shown in this figure, the size S of the chip size of the first LED 20 is substantially the same as the transparent length L obtained by subtracting the chip size S of the first LED 20 from the length P between the chips of the first LED 20. Even in the case of the size, if the first LED 20 is provided at a position where it does not overlap with the first electrode 62 and the second electrode 63, the light emitted from the first LED 20 is emitted to the first electrode 62 and the second electrode 63. It reaches the display surface 6 (FIG. 1) of the touch panel integrated LED panel 1 without being interrupted. As a result, the first LED 20 that emits high-intensity light can be displayed at a brightness that maintains the brightness, so that high-luminance display is possible and high-quality display is possible even outdoors exposed to sunlight.

In FIG. 14, the control unit 25 is removed from the first LED 20 used in FIG. 7, and the green LED, blue LED, and red LED chips are packaged in a plane mount type (SMD) or bullet type. The LED light emitting substrate 2 (LED panel) is configured by using the second LED 100. Here, the electrode pattern connecting the second LED 100 is omitted.
Here, assuming that the chip size of the second LED 100 is S and the length between the chips of the second LED 100 is P, when the length L is obtained by subtracting the chip size S from the length P, the length L> the chip size. The LED light emitting substrate 2 set as S is shown.

FIG. 15 is a plan view of the touch panel integrated LED panel 1 in which the upper surface of the LED light emitting substrate 2 (LED panel) using the second LED 100 shown in FIG. 14 and the lower surface of the touch panel 4 shown in FIG. 8 are bonded together. ..
Here, the larger the transparent length L obtained by subtracting the chip size S from the length P, the higher the transparency of the LED light emitting substrate 2. In order to sufficiently enhance the transparency of the LED light emitting substrate 2, if the electrode widths of the width 91 of the first electrode and the width 92 of the second electrode are c, and the length L ≧ c, the transparency of the LED light emitting substrate 2 is obtained. The sex can be made sufficiently high. Here, if the second LED 100 is provided at a position overlapping the first electrode 62 and the second electrode 63, the light emitted by the second LED 100 is obstructed by the electrodes of the first electrode 62 and the second electrode 63. Since the brightness of the LED panel 1 integrated with the minute touch panel is lowered, the second LED 100 is preferably provided at a position where it does not overlap with the first electrode 62 and the second electrode 63. That is, when the first electrode 62 and the second electrode 63 are prevented from overlapping the positions of the second LED 100, the light emitted from the second LED 100 is not blocked by the first electrode 62 and the second electrode 63, and the touch panel is one. It reaches the display surface 6 (FIG. 1) of the body LED panel 1. As a result, the second LED 100 that emits high-intensity light can be displayed at a brightness that maintains the brightness, so that high-luminance display is possible and high-quality display is possible even outdoors exposed to sunlight.

In FIG. 16, the size S of the chip size of the second LED 100 described with reference to FIG. 15 is a transparent length obtained by subtracting the chip size S of the second LED 100 from the length P between the chips of the second LED 100. The case of almost the same size as L is shown. As shown in this figure, the size S of the chip size of the second LED 100 is substantially the same as the transparent length L obtained by subtracting the chip size S of the second LED 100 from the length P between the chips of the second LED 100. Even in the case of the size, if the second LED 100 is provided at a position where it does not overlap with the first electrode 62 and the second electrode 63, the light emitted from the second LED 100 is emitted to the first electrode 62 and the second electrode 63. It reaches the display surface 6 (FIG. 1) of the LED panel 1 integrated with the touch panel without being interrupted. As a result, the second LED 100 that emits high-intensity light can be displayed at a brightness that maintains the brightness, so that high-luminance display is possible and high-quality display is possible even outdoors exposed to sunlight.

FIG. 17 shows a TFT circuit 204 formed on a base substrate 21 by a dry process or a wet process, and is an LED panel on which an LED is not mounted. A total of 16 TFTs, 4 in each of the horizontal and vertical directions, are shown. It forms a circuit.

FIG. 18 shows an LED in which a green LED 201, a blue LED 202, and a red LED 203 are mounted and electrically connected in the immediate vicinity of the TFT circuit 204. The LED electrically connected to the TFT circuit 204 and the LED becomes the third LED, and an LED panel is formed by arranging four third LEDs in each of the horizontal and vertical directions, for a total of 16 third LEDs. For the green LED 201, the blue LED 202, and the red LED 203, for example, only good products can be directly mounted on the light emitting substrate 2 by the mass transfer method (material transfer method) from the bare chip on the semiconductor wafer by using a laser, or on the semiconductor wafer. The bare chip is once set on the chip mount, and the LED panel is formed by the method of mounting on the LED light emitting substrate 2 by the pick and press method. In the drawings, the LED terminal for controlling the light emission of each LED, the terminal of the TFT circuit, and the electrode pattern connecting between the third LED 200 are omitted.
In FIG. 18, where S is the chip size of the third LED 200 and P is the length between the chips of the third LED 200, and L is the transparent length obtained by subtracting the chip size S from P, L ≧ S. The LED light emitting substrate 2 is shown.

FIG. 19 is a plan view of the touch panel integrated LED panel 1 in which the upper surface of the LED light emitting substrate 2 (LED panel) using the third LED 200 shown in FIG. 18 and the lower surface of the touch panel 4 shown in FIG. 8 are bonded together. ..
Here, the larger the transparent length L obtained by subtracting the chip size S from the length P, the higher the transparency of the LED light emitting substrate 2. In order to sufficiently enhance the transparency of the LED light emitting substrate 2, if the electrode widths of the width 91 of the first electrode and the width 92 of the second electrode are c, and the length L ≧ c, the transparency of the LED light emitting substrate 2 is obtained. The sex can be made sufficiently high. Here, if the third LED 200 is provided at a position overlapping the first electrode 62 and the second electrode 63, the light emitted by the third LED 200 is obstructed by the electrodes of the first electrode 62 and the second electrode 63. Since the brightness of the LED panel 1 integrated with the minute touch panel is lowered, it is preferable to provide the third LED 200 at a position where it does not overlap with the first electrode 62 and the second electrode 63. That is, when the first electrode 62 and the second electrode 63 are not overlapped with the position of the third LED 200, the light emitted from the third LED 200 is not blocked by the first electrode 62 and the second electrode 63, and the touch panel is one. It reaches the display surface 6 (FIG. 1) of the body LED panel 1. As a result, since the third LED 200 that emits high-intensity light can be displayed with the brightness maintained, the high-luminance display becomes possible and the high-quality display becomes possible even outdoors exposed to sunlight.

In FIG. 20, the transparent length L obtained by subtracting the size S of the chip size of the third LED 200 from the length P between the chips of the third LED 200 is the width 91 of the first electrode and the width of the second electrode. The case where the electrode width of 92 is almost the same as c is shown. As shown in this figure, even if the size is approximately the same as the transparent length L obtained by subtracting S from P, if the third LED 200 is provided at a position that does not overlap with the first electrode 62 and the second electrode 63. The light emitted from the third LED 200 reaches the display surface 6 (FIG. 1) of the touch panel integrated LED panel 1 without being blocked by the first electrode 62 and the second electrode 63. As a result, since the third LED 200 that emits high-intensity light can be displayed with the brightness maintained, the high-luminance display becomes possible and the high-quality display becomes possible even outdoors exposed to sunlight.

In the figure, the same code and the same symbol indicate the same function and the same effect.

The touch panel integrated LED panel of the present invention is a display having transparency, flexibility, high brightness, high quality display, long life, weather resistance, low power consumption, and touch function.
While looking at the information displayed on the display, the transparency of the display allows you to see the scenery behind the display. When applied to automobiles, the driver can display the desired screen or operate ancillary equipment by touching the operation surface of the touch panel, so efficient driving to the destination and information retrieval related to driving can be performed. However, it becomes possible.

1 Touch panel integrated LED panel 2 LED light emitting board 3 RGB LED chip 4 Touch panel 5 RGB LED chip (plan view)
6 Display surface of LED panel 7 Black pixel 8 Green pixel 9 White pixel 10,12,14 Automobile 11 Transparent body 13 Windshield 15 Front door glass 16 Rear door glass 17 Back door glass 18 Sunroof glass 20 First LED
21 Base board 22 Red LED
23 blue LED
24 green LED
25 Control unit 27 Input terminal 28 Light emission signal 29 Output terminal 34 Display signal generator 40 Timing chart 41 Display signal 45 a1 pixel data 46 a2 pixel data 47 a3 pixel data 48 a4 pixel data 50 Bottom side of touch panel 55 Touch input Equipment 61, 81 Transparent substrate 62,82 1st electrode 63,83 2nd electrode 65 1st substrate 66 2nd substrate 68 Transparent adhesive 71 Controller 72 Drive unit 73 Detection unit 74 Control unit 84 Adhesive layer 85 Protective layer 91 1st Extreme width of electricity 92 Width of second electrode 100 Second LED
131 Cross-sectional view of LCD panel with touch panel 132 Color filter pattern (plan view)
133 LCD panel display pixels (plan view)
134 LCD panel 135,155 Surface glass 136 Color filter 137 LCD cell 138 Backlight 139,157 Bottom glass 140 Touch panel 151 Cross section of organic EL panel with touch panel 152 RGB light emitting layer pixel pattern (plan view)
153 Display pixels of organic EL panel (plan view)
154 Organic EL panel 156 RGB light emitting layer 157 Bottom glass 158 Touch panel 200 Third LED
201 green LED
202 blue LED
203 red LED
204 TFT circuit

Claims (12)

1. An LED light emitting board composed of an LED chip that emits light in red, blue, and green and a first LED in which a control unit that controls light emission of the LED chip is integrated vertically and horizontally, and the LED light emitting board. A touch panel integrated LED panel characterized in that the lower surface of the touch panel is attached to the surface that is the space on the light emitting surface side.
2. A plane-mounted or bullet-shaped LED on which an LED bare chip that emits light in red, blue, or green is mounted as a second LED, and the LED light emitting board configured by arranging the second LEDs in the vertical and horizontal directions and the said A touch panel integrated LED panel characterized in that the lower surface of the touch panel is bonded to the surface of the LED light emitting substrate that is the space on the light emitting surface side.
3. An LED bare chip that emits light in red, blue, and green is mounted in the vicinity of a driving TFT circuit formed in advance on a transparent substrate, and the LED bare chip electrically connected to the driving TFT circuit is used as a third LED. LED light emitting board composed by arranging the LEDs of LED panel.
4. The touch panel integrated LED panel according to any one of claims 1 to 3, wherein all the base base materials constituting the LED light emitting substrate and the touch panel are transparent flexible substrates.
5. The materials used for all the base materials of the LED light emitting substrate and the touch panel are polyimide (PI), polyethylene (PE), polypropylene (PP / OPP), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN) as organic materials. The integrated touch panel according to claim 4, wherein an insulating material containing vinyl chloride resin (PVC), polystyrene (PS / OPS), acrylic (AC), polycarbonate (PC), and triacetate (TAC) is used. Type LED panel.
6. The material used for all the base materials of the LED light emitting substrate and the touch panel is a glass having a thickness of 200 μm or less in order to provide flexibility as an inorganic material, and for a rod having a curvature of 1 mm or more. The touch panel integrated LED panel according to claim 4, wherein cracks and cloudiness do not occur even if the glass is bent and stretched at 180 ° a plurality of times or more.
7. Let S be the chip size of the first LED, the chip size of the second LED, and the chip size of the third LED mounted on the LED light emitting board, and the length between the chips of the first LED and the second LED. Assuming that the length between the chips of the third LED and the length between the chips of the third LED are P, respectively, the range of the value of the square of K (K ² ) is 0.0025 ≦ when the ratio of S / P is K. The touch panel integrated LED panel according to any one of claims 1 to 3, wherein K ² ≤ 0.96.
8. Let S be the chip size of the first LED, the chip size of the second LED, and the chip size of the third LED mounted on the LED light emitting board, and the length between the chips of the first LED and the second LED. When the length between the chips of the third LED and the length between the chips of the third LED are P, the transparent length L obtained by subtracting S from P is the width of the first electrode provided on the touch panel and the width of the first electrode. Assuming that the width of each of the second electrodes is c, the width of the first electrode and the width c of the second electrode should be such that the transparent length L ≧ c, and the first electrode and the first electrode should be transparent. The touch panel integrated LED panel according to any one of claims 1 to 3, wherein the two electrodes do not overlap with the position of the LED chip mounted on the LED light emitting substrate.
9. The LED chips used in the first LED, the second LED, and the third LED mounted on the LED light emitting substrate grow GaN crystals on the sapphire substrate to form P-type and n-type GaN semiconductors. The touch panel integrated LED panel according to any one of claims 1 to 3, wherein the LED chip is manufactured as a base.
10. A plurality of first electrodes (vertical direction) and a plurality of second electrodes (horizontal direction) provided on the touch panel are provided in an orthogonal state (lattice pattern) while maintaining insulation, and are provided on the first substrate. The first electrode is transparent between the surface of the first substrate on which the second electrode is provided on the second substrate and the surface of the first substrate on which the first electrode is provided and the surface of the second substrate on which the second electrode is not provided. A transparent adhesive is provided between the surface of the second substrate on which the second electrode is provided and the lower surface of the transparent substrate, and the first substrate, the second substrate, and the transparent substrate are strongly bonded to each other by the transparent adhesive. The touch panel integrated LED panel according to any one of claims 1 to 3, wherein the touch electrode is formed by adhering to a touch electrode.
11. A plurality of first electrodes (longitudinal direction) and a plurality of second electrodes (horizontal direction) are provided in an orthogonal state (lattice shape) while insulation is maintained, and a second electrode is provided on the lower surface of the transparent substrate. It is a touch panel formed by forming an adhesive layer using a transparent adhesive on the surface thereof, providing a first electrode on the surface of the adhesive layer, and providing a protective layer on the surface thereof. The touch panel integrated LED panel according to any one of claims 1 to 3.
12. The touch panel integrated LED according to any one of claims 1 to 3, wherein a distributed liquid crystal film having a variable transmittance or another film having a variable transmittance is used for the base substrate of the LED light emitting substrate. panel.
    

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