High-brightness display device

Abstract

The utility model discloses a high-brightness display device. The high-brightness display device comprises a support with a cup body structure and a plurality of light-emitting chips arranged at the bottom of the cup body structure. The cup body structure is a trumpet-shaped cylinder structure, and more than one vertical side wall is arranged on the inner side wall of the trumpet-shaped cylinder structure; and more than one reflective area is formed on the inner side wall of the cup body structure based on the vertical side wall. The bottom of the cup body structure is provided with the light reflecting area formed by the vertical side wall structure, so that emergent light rays of the LED light-emitting chip can pass through the light reflecting area to be gathered towards the middle of the cup body, the front surface light emitting amount of the display device is increased, and the front surface light emitting effect of the display device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of LED device technology, and specifically to a high-brightness display device. Background Technology

[0002] LED display devices are the basic units that make up LED display screens. Figure 1 The diagram shows a cross-sectional view of an existing LED display device. To achieve wide-angle light emission, existing LED display devices use a horn-shaped cup structure to allow the light emitted by the LED chip to diffuse in all directions. Because this cup structure expands the light emission angle of the display device's light-emitting surface, it reduces the amount of light emitted from the central area of ​​the display device, resulting in insufficient brightness concentration on the front of the display device and affecting the front light emission effect of the LED display device. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a high-brightness display device. By setting a reflective area formed by a vertical sidewall structure at the bottom of the cup structure, the light emitted by the LED light-emitting chip can be concentrated towards the center of the cup through the reflective area, thereby increasing the amount of light emitted from the front of the display device and effectively improving the front light emission effect of the display device.

[0004] This utility model provides a high-brightness display device, which includes: a bracket with a cup structure, and a plurality of light-emitting chips placed at the bottom of the cup structure;

[0005] The cup body structure is configured as a trumpet-shaped cylindrical structure, and the inner sidewall of the trumpet-shaped cylindrical structure is provided with one or more vertical sidewalls.

[0006] Based on the vertical sidewall, one or more reflective areas are formed on the inner sidewall of the cup structure.

[0007] Furthermore, the reflective area is located at the bottom of the cup structure, and / or the reflective area is located at the top of the cup structure.

[0008] Furthermore, the maximum thickness of the plurality of light-emitting chips is h, the height of the reflective area is H, and the constraint relationship between h and H is: h = H.

[0009] Furthermore, the bottom of the cup structure is provided with a vertical sidewall section, which forms a first reflective area at the bottom of the cup structure.

[0010] Furthermore, the top of the cup structure is provided with a vertical sidewall section, which forms a second reflective area on the top of the cup structure.

[0011] Furthermore, the bottom of the cup structure is provided with a first reflective area and a third reflective area formed based on the vertical sidewall section, and the first reflective area and the third reflective area are arranged in a staggered manner.

[0012] Furthermore, a buffer step is formed between the first reflective area and the third reflective area.

[0013] Furthermore, the bottom of the cup body is provided with a metal layer and an insulating channel, and the metal layer is divided into a common electrode pad and several electrode pads based on the insulating channel.

[0014] Several light-emitting chips are electrically connected to several electrode pads in a one-to-one correspondence based on bonding wires.

[0015] Furthermore, several of the light-emitting chips are placed on electrode pads in the central region of the bottom of the cup structure;

[0016] A plurality of the light-emitting chips are mounted on the electrode pads based on conductive silver paste, and / or a plurality of the light-emitting chips are mounted on the electrode pads based on insulating adhesive.

[0017] Furthermore, the cup structure is filled with encapsulating colloid, and several of the light-emitting chips are encapsulated within the encapsulating colloid.

[0018] This invention provides a high-brightness display device. By setting a reflective area formed by a vertical sidewall structure inside the display device, the light emitted by the LED light-emitting chip can be concentrated towards the central area of ​​the cup through the reflective area, thereby effectively improving the front light emission effect of the display device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of the structure of an existing LED display device;

[0021] Figure 2 This is a cross-sectional view of the high-brightness display device according to Embodiment 1 of this utility model;

[0022] Figure 3 This is a top view of the high-brightness display device in an embodiment of this utility model;

[0023] Figure 4This is a cross-sectional view of the high-brightness display device according to Embodiment 2 of this utility model;

[0024] Figure 5 This is a cross-sectional view of the high-brightness display device according to Embodiment 3 of this utility model;

[0025] Figure 6 This is a structural cross-sectional view of the high-brightness display device according to Embodiment 4 of this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Figure 2 A cross-sectional view of the high-brightness display device in an embodiment of the present invention is shown. In this embodiment, the high-brightness display device includes: a support 1 with a cup-shaped structure 11, and a light-emitting chip 2 placed at the bottom of the cup-shaped structure 11; the cup-shaped structure 11 is configured as a horn-shaped cylindrical structure, and the inner sidewall of the horn-shaped cylindrical structure is provided with one or more vertical sidewalls. Based on the horn-shaped cylindrical structure, the light emission angle of the display device can be improved, so that the display device can meet the requirements of large-angle light emission.

[0029] Furthermore, based on the vertical sidewall forming one or more first reflective areas 12 on the inner sidewall of the cup structure 11, the first reflective areas 12 are used to reflect the light emitted by the light-emitting chip 2, so that the light inside the cup of the display device can be concentrated in the central area, thereby improving the brightness of the front light emitted by the display device.

[0030] In this embodiment, a first reflective area 12 formed by a vertical sidewall is provided at the bottom of the cup structure 11. The light emitted by the light-emitting chip 2 is reflected and focused based on the first reflective area 12, thereby increasing the amount of light emitted from the central region of the display device and improving the front light emission efficiency of the display device.

[0031] Specifically, the maximum thickness of the plurality of light-emitting chips 2 is h, and the height of the first reflective area 12 is H. The constraint relationship between h and H is: h = H. In this embodiment, the red light chip among the plurality of light-emitting chips 2 has the largest thickness, that is, the thickness of the red light chip is h, and the height H of the first reflective area 12 is equal to the maximum thickness h of the light-emitting chip 2, ensuring that the first reflective area 12 can meet the reflection requirements of the side light emitted by the plurality of light-emitting chips 2, that is, the light emitted from the side of the plurality of light-emitting chips 2 can enter the first reflective area 12, and the light is reflected and concentrated in the central area of ​​the display device based on the first reflective area 12.

[0032] By setting the first reflective area 12 at the bottom of the cup structure 11, the light emitted by the light-emitting chip 2 of the display device when it is working can not only be emitted from the front of the display device and reflected by the inner side wall of the cup structure 11 to the top front of the device, but also reflected by the first reflective area 12 of the cup structure 11, thereby achieving a brightening effect.

[0033] Based on the cup structure 11, light is reflected synchronously around the vertical edges of the light-emitting chip 2, increasing the amount of light at the top of the display device, thereby improving the brightness of the top front of the device and making the display effect better when viewed from the front. Moreover, the high-brightness display device provided by this utility model embodiment has the advantages of reduced power consumption and good energy saving compared with conventional display devices of the same level of front brightness. Furthermore, the display device provided by this utility model embodiment has an improvement of approximately +3% in front light emission effect compared with display devices of the same material and specifications, effectively improving the display effect of the screen.

[0034] Specifically, Figure 3 The diagram shows a top view of the display device in an embodiment of the present invention. The bottom of the cup structure 11 of the bracket 1 is provided with a metal layer and an insulating channel 3. The metal layer is divided based on the insulating channel 3, into a common electrode pad 4 and several electrode pads 5. Several light-emitting chips 2 are electrically connected to several electrode pads 5 in a one-to-one correspondence based on bonding wires to meet the placement and installation requirements of several light-emitting chips 2.

[0035] Furthermore, the insulating channel 3 can be electrically isolated by filling with ink to meet the electrical pad structure layout design at the bottom of the cup structure 11.

[0036] Specifically, several light-emitting chips 2 are placed on electrode pads 5 in the central area of ​​the bottom of the cup structure 11. Some of the light-emitting chips 2 are placed on the electrode pads 5 based on conductive silver, and / or some of the light-emitting chips 2 are placed on the electrode pads 5 based on insulating paste. When the light-emitting chip 2 is a right-mounted chip, it can be placed on the electrode pads 5 based on conductive silver paste. When the light-emitting chip 2 is a flip-chip, it can be placed on the electrode pads 5 using insulating paste, and the electrical connection between the light-emitting chip 2 and the electrode pads 5 is achieved based on wire bonding.

[0037] Furthermore, in this embodiment, the cup structure 11 is provided with a red light chip, a green light chip, and a blue light chip, wherein the red light chip is a right-mounted chip, and the green light chip and the blue light chip are flip-chips. Please refer to [reference needed]. Figure 3 The electrode pads 5 in the central region are used as the placement area for several light-emitting chips 2, so that the red light chip can be placed on the electrode pads 5 based on conductive silver paste, and the green light chip and the blue light chip can be placed on the electrode pads 5 based on insulating adhesive. The common electrode connection between the red light chip, the green light chip and the blue light chip is realized by wire bonding.

[0038] Specifically, the cup structure 11 is filled with encapsulating colloid, and several light-emitting chips 2 are encapsulated in the encapsulating colloid. The encapsulating colloid can protect the light-emitting chips 2. By encapsulating and protecting the several light-emitting chips 2 in the cup, moisture can be prevented from entering the pad structure and the several light-emitting chips 2 inside the cup structure 11, thereby improving the encapsulation reliability of the display device.

[0039] This utility model embodiment provides a high-brightness display device. By providing a first reflective area 12 formed by a vertical sidewall structure inside the display device, the light emitted by the LED light-emitting chip 2 can be concentrated towards the middle area of ​​the cup body through the first reflective area 12, thereby effectively improving the front light emission effect of the display device.

[0040] Example 2:

[0041] Figure 4 A cross-sectional view of the high-brightness display device in an embodiment of the present invention is shown. In this embodiment, the cup structure 11 of the high-brightness display device is provided with two reflective areas. The reflective areas are located at the bottom and top of the cup structure 11, which increases the amount of light reaching the top of the cup structure 11 and improves the concentration of light in the middle area of ​​the display device, thereby improving the light emission effect of the display device.

[0042] The bottom of the cup structure 11 is provided with a vertical sidewall section, and a first reflective area 12 is formed at the bottom of the cup structure 11 based on the vertical sidewall section. The vertical sidewall section at the bottom of the cup structure 11 forms a first reflective area 12, and the light-emitting chip 2 at the bottom of the cup structure 11 is reflected and concentrated based on the first reflective area 12, thereby increasing the amount of light emitted from the front of the display device.

[0043] The cup structure 11 has a vertical sidewall section at its top. Based on the vertical sidewall section, a second reflective area 13 is formed at the top of the cup structure 11. The formation of the second reflective area 13 at the top of the cup structure 11 allows the cup structure 11 to have a large light-emitting surface while reflecting and concentrating the light emitted from the top area of ​​the cup structure 11, thereby improving the front light emission efficiency of the display device.

[0044] Furthermore, the height of the second reflective area 13 is the same as the height of the first reflective area 12, which can facilitate the processing of the cup structure 11 and enable the cup structure 11 to meet the light emission requirements of the light-emitting chip 2.

[0045] This utility model embodiment provides a high-brightness display device. By synchronously reflecting light through the vertical edges around the light-emitting chip 2, the amount of light reaching the top of the device from the cup structure 11 is increased. Furthermore, by setting a vertical edge at the top of the cup structure 11, the top of the cup structure 11 can also synchronously reflect light, increasing the amount of light in the central area of ​​the top of the device. This significantly improves the brightness of the front of the device. Compared with conventional display devices of the same material and specifications, the display device provided by this utility model embodiment has the advantages of low energy consumption and low manufacturing cost. At the same time, the front light emission effect of the display device is improved by approximately +5.8%, meeting the usage requirements for assembling a display screen.

[0046] Example 3:

[0047] Figure 5A cross-sectional view of the high-brightness display device in an embodiment of the present invention is shown. In this embodiment, the cup structure 11 of the high-brightness display device is provided with two reflective areas. The reflective areas are located at the bottom of the cup structure 11. The bottom of the cup structure 11 is provided with a first reflective area 12 and a third reflective area 14 formed based on a vertical sidewall section. The first reflective area 12 and the third reflective area 14 are staggered. By providing the staggered first reflective area 12 and the third reflective area 14 at the bottom of the cup structure 11, the light-emitting chip 2 can reflect light based on the first reflective area 12 and the third reflective area 14, thereby concentrating the light in the middle region of the cup structure 11 and improving the light emission efficiency of the front of the display device.

[0048] Specifically, a buffer step 15 is formed between the first reflective area 12 and the third reflective area 14. The buffer step 15 is perpendicular to the first reflective area 12 and the third reflective area 14, and can reflect light in the vertical direction to meet the light emission requirements of the display device.

[0049] Specifically, the bottom of the cup structure 11 is provided with a vertical sidewall section, and a first reflective area 12 is formed at the bottom of the cup structure 11 based on the vertical sidewall section. The vertical sidewall section at the bottom of the cup structure 11 forms a first reflective area 12, and the light-emitting chip 2 at the bottom of the cup structure 11 is reflected and focused based on the first reflective area 12, thereby increasing the amount of light emitted from the front of the display device.

[0050] Another vertical sidewall segment is provided above the first reflective area 12. Based on the vertical sidewall segment, the third reflective area 14 is formed above the first reflective area 12. This can improve the concentration of light emitted by the light-emitting chip 2 in the middle region at the bottom of the cup structure 11, while ensuring that the light emitted from the cup structure 11 is concentrated and the light emitted outward is concentrated, thereby improving the light emission efficiency of the display device.

[0051] Furthermore, the height of the third reflective area 14 is the same as the height of the first reflective area 12, which can facilitate the processing of the cup structure 11 and enable the cup structure 11 to meet the light emission requirements of the light-emitting chip 2.

[0052] Specifically, the light emitted by the light-emitting chip 2 of the display device provided in this embodiment can not only emit light from the front of the display device and be reflected to the top front of the device by the side wall of the cup structure 11, but also be reflected by the first reflective area 12 and the third reflective area 14, thereby increasing the amount of light reaching the top of the display device from inside the cup structure 11. At the same time, the buffer step 15 between the first reflective area 12 and the third reflective area 14 can reflect light synchronously. The high-brightness display device proposed in this embodiment has an luminous efficacy improvement of approximately +8.8% compared to conventional display devices of the same material and specifications, which can effectively improve the luminous efficacy of the front of the display device.

[0053] Example 4:

[0054] Figure 6 A cross-sectional view of the high-brightness display device in an embodiment of the present invention is shown. In this embodiment, the cup structure 11 of the high-brightness display device is provided with three reflective areas. The reflective areas are located at the bottom and top of the cup structure 11. A first reflective area 12 and a third reflective area 14 are provided at the bottom of the cup structure 11, and a second reflective area 13 is provided at the top of the cup structure 11, so that the bottom and top of the cup structure 11 can meet the light emission requirements of the light-emitting chip 2.

[0055] The bottom of the cup structure 11 is provided with a first reflective area 12 and a third reflective area 14 formed based on a vertical sidewall section, and the first reflective area 12 and the third reflective area 14 are staggered with each other. By providing the staggered first reflective area 12 and the third reflective area 14 at the bottom of the cup structure 11, the light-emitting chip 2 can reflect light based on the first reflective area 12 and the third reflective area 14, thereby concentrating the light in the middle region of the cup structure 11 and improving the light emission efficiency of the front of the display device.

[0056] Specifically, a buffer step 15 is formed between the first reflective area 12 and the third reflective area 14. The buffer step 15 is perpendicular to the first reflective area 12 and the third reflective area 14, and can reflect light in the vertical direction to meet the light emission requirements of the display device.

[0057] The cup structure 11 has a vertical sidewall section at its top. Based on the vertical sidewall section, a second reflective area 13 is formed at the top of the cup structure 11. The formation of the second reflective area 13 at the top of the cup structure 11 allows the cup structure 11 to have a large light-emitting surface while reflecting and concentrating the light emitted from the top area of ​​the cup structure 11, thereby improving the front light emission efficiency of the display device.

[0058] Furthermore, the height of the second reflective area 13 is the same as the height of the first reflective area 12, which can facilitate the processing of the cup structure 11 and enable the cup structure 11 to meet the light emission requirements of the light-emitting chip 2.

[0059] Specifically, in the high-brightness display device proposed in this embodiment, the light emitted by the light-emitting chip 2 inside the cup structure 11 of the display device can not only emit light normally from the front of the display device and be reflected to the top of the cup structure 11 by the side wall of the cup structure 11, but also be reflected by four structures, namely, by the first reflective area 12 and the third reflective area 14 at the bottom of the cup structure 11, the second reflective area 13 at the top of the cup structure 11, and the buffer step 15 between the first reflective area 12 and the third reflective area 14. This increases the amount of light in the top area of ​​the cup structure 11 and improves the light emission efficiency of the front of the display device. The high-brightness display device provided in this embodiment improves the light emission efficiency by approximately +12.8% compared to display devices of the same material and specifications, effectively improving the front light emission effect of the display device and improving the front display effect of the screen.

[0060] This utility model embodiment provides a high-brightness display device. By providing a first reflective area 12 formed by a vertical sidewall structure inside the display device, the light emitted by the LED light-emitting chip 2 can be concentrated towards the middle area of ​​the cup body through the first reflective area 12, thereby effectively improving the front light emission effect of the display device.

[0061] Furthermore, the above description provides a detailed overview of the high-brightness display device provided by the embodiments of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A high-brightness display device, characterized in that, The high-brightness display device includes: a bracket with a cup-shaped structure, and a plurality of light-emitting chips placed at the bottom of the cup-shaped structure; The cup body structure is configured as a trumpet-shaped cylindrical structure, and the inner sidewall of the trumpet-shaped cylindrical structure is provided with one or more vertical sidewalls. Based on the vertical sidewall, one or more reflective areas are formed on the inner sidewall of the cup structure.

2. The high-brightness display device as described in claim 1, characterized in that, The reflective area is located at the bottom of the cup structure, and / or the reflective area is located at the top of the cup structure.

3. The high-brightness display device as described in claim 1, characterized in that, The maximum thickness of the plurality of light-emitting chips is h, the height of the reflective area is H, and the constraint relationship between h and H is: h = H.

4. The high-brightness display device as described in claim 1, characterized in that, The bottom of the cup structure is provided with a vertical sidewall section, and a first reflective area is formed at the bottom of the cup structure based on the vertical sidewall section.

5. The high-brightness display device as described in claim 1, characterized in that, The top of the cup structure is provided with a vertical sidewall section, which forms a second reflective area on the top of the cup structure.

6. The high-brightness display device as described in claim 1, characterized in that, The bottom of the cup structure is provided with a first reflective area and a third reflective area formed based on the vertical sidewall section, and the first reflective area and the third reflective area are arranged in a staggered manner.

7. The high-brightness display device as described in claim 6, characterized in that, A buffer step is formed between the first reflective area and the third reflective area.

8. The high-brightness display device as described in claim 1, characterized in that, The bottom of the cup body is provided with a metal layer and an insulating channel. The metal layer is divided into a common electrode pad and several electrode pads based on the insulating channel. Several light-emitting chips are electrically connected to several electrode pads in a one-to-one correspondence based on bonding wires.

9. The high-brightness display device as described in claim 8, characterized in that, Several of the light-emitting chips are placed on the electrode pads in the middle region of the bottom of the cup structure; A plurality of the light-emitting chips are mounted on the electrode pads based on conductive silver paste, and / or a plurality of the light-emitting chips are mounted on the electrode pads based on insulating adhesive.

10. The high-brightness display device as claimed in claim 1, characterized in that, The cup structure is filled with encapsulating colloid, and several of the light-emitting chips are encapsulated within the encapsulating colloid.

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