CN101739900B - Display panel of electronic device - Google Patents

Abstract

A display panel of an electronic device comprises a double-layer plate, a flexible circuit board and a display cover plate; the double-layer board is composed of a reflecting board and a transparent board, the transparent board is formed above the reflecting board and is provided with a groove and an inclined plane, the flexible circuit board is provided with a side-illuminated light-emitting diode, the side-illuminated light-emitting diode is contained in the groove of the transparent board, and the display cover board covers the upper parts of the double-layer board and the flexible circuit board and is provided with a light-transmitting block. The display panel of the electronic device can reduce the components, can achieve the effect of light source homogenization, and can also utilize the reflecting plate to block so as to avoid the problem of color mixing when the light sources with different color systems are used for displaying.

Description

Display panel of electronic device

technical field

The invention relates to a display panel of an electronic device, in particular to a display panel capable of uniformizing a display light source.

Background technique

In the era of information technology, electronic devices have been widely used in people's daily life. Common electronic devices, including 3C products such as PDA, computer, audio, etc., in addition to performing specific functions according to the user's instructions, other It also includes a display panel for displaying the current status of the electronic device, so as to inform the user of the current relevant information of the electronic device, such as power status, network connection status or warning status and other information.

Please refer to FIG. 1, which is a schematic diagram of a display panel of an electronic device in the prior art. In the figure, the display panel 1 is combined with a light source indicating area 101 of an electronic device 10. Please refer to FIG. 2, which is a cross-sectional view of the display panel 1, including A printed circuit board 11 (Printed circuit board, PCB), a plurality of light emitting diodes 12, a power line 13, a reflector 14, a uniform plate 15, a diffuser 16 and a display cover 17.

The printed circuit board 11 is respectively connected with the above-mentioned light-emitting diodes 12 and the power line 13, and drives the light-emitting diodes 12 to emit light through the electric energy provided by the power line 13, and the reflector 14 is arranged on the bottom of the above-mentioned light-emitting diodes 12 or Surrounding, its purpose is to reflect the light source to avoid light leakage, the light uniform plate 15 and the diffuser 16 are arranged above the light emitting diode 12, its main function is to diffuse the light source and make the light source uniform, and the display cover 17 is arranged on the diffuser 16 Above, its surface is provided with a transparent block 171 and a non-transparent block 172, the light emitted by the light emitting diode 12 can pass through the transparent block 171, and the display panel 1 uses the brightness or flickering of the light, so that The user can understand the current status of the electronic device 1 .

However, the display panels of prior art electronic devices still have the following disadvantages:

a. The thickness of the display panel of the prior art is too large:

Because there are too many components in the prior art, including circuit boards, light-emitting diodes, diffusers, uniform plates, and display covers, the display panel formed after the combination of these components will become very thick, and it is impossible to obtain light, thin and short electronic devices. device.

b. The cost of the display panel in the prior art is high and the combination is not easy:

There are too many components in the prior art, including the diffuser and the uniformity plate, which are expensive optical components, resulting in high cost of the display panel and difficulty in assembly.

c. When the display panel in the prior art displays light sources of more than two colors, there will be a problem of color mixing:

When some display panels need to use light sources of more than two colors, the structural design of the display panels in the prior art does not take into account the problem of color mixing between light sources of different colors, which affects the display quality.

Contents of the invention

The invention provides a display panel of an electronic device. The display panel has fewer components, is not only easy to assemble, but also relatively cheap in cost, and does not have the problem of color mixing.

The display panel of the present invention is combined with a light source indication area of an electronic device, and includes a double-layer board, a flexible circuit board and a display cover board.

Wherein, the double-layer board includes a reflection board and a transparent board, and the transparent board is formed on the top of the reflection board and has a groove and an inclined surface.

The flexible circuit board has a side-illuminated light-emitting diode. The side-illuminated light-emitting diode is accommodated in the groove of the transparent plate and emits light toward the slope. The display cover covers the double-layer board and the flexible circuit. On the top of the board, there is a light-transmitting block, wherein, after the light emitted by the side-illuminated LED enters the double-layer board, it hits the reflection board for reflection, and is emitted from the slope of the transparent board.

Since the intensity of light inside the transparent plate will gradually weaken with the distance it travels, the thickness of the inclined surface of the transparent plate of the present invention decreases from near to far relative to the side-illuminated LED, that is to say, the closer the inclined surface is to The greater the thickness at the groove, the thinner the thickness is, on the contrary, the purpose is to make each light travel the same distance inside the transparent plate before emitting from the inclined surface, so as to obtain a more uniform light output.

Therefore, the display panel of the present invention only needs one transparent plate to achieve the effect of uniform light, and does not need additional diffusion sheets and light uniform plates. Compared with the prior art, the present invention not only has fewer components, is easy to assemble, and It will also be thinner and less expensive.

In addition, in the display panel of the present invention, the double-layer board can also have multiple grooves and multiple slopes, while the flexible circuit board has multiple side-illuminated light-emitting diodes, which are respectively accommodated in the grooves Among them, the above-mentioned side-illuminated LEDs respectively provide light sources of different colors, and the above-mentioned side-illuminated LEDs are separated from each other by the reflector. Therefore, when the side-illuminated LEDs of different colors emit light at the same time, there will be no problem of color mixing.

From the above, it can be seen that compared with the prior art, the beneficial technical effect of the present invention is that the display panel of the electronic device of the present invention can not only reduce the number of components, but also achieve the effect of uniform light source. When the light source is displayed, the present invention also uses a reflector to block it to avoid the problem of color mixing.

The specific embodiments adopted by the present invention will be further described through the following embodiments and accompanying drawings.

Description of drawings

1 is a schematic diagram of a display panel of an electronic device in the prior art;

2 is a sectional view of a display panel in the prior art;

3 is a cross-sectional view of a display panel of the present invention;

Figure 4 is a schematic diagram of light traveling inside the double-layer board of the present invention; and

FIG. 5 is a diagram of another embodiment of the display panel of the present invention.

Detailed ways

The display panel of the present invention is combined with a light source indicating area of an electronic device, and the electronic device may be a PDA, a notebook computer, a mobile phone, or a stereo.

Please refer to FIG. 3 , which is a cross-sectional view of the display panel of the present invention. In the figure, the display panel 30 includes a double-layer board 31 , a flexible circuit board 32 and a display cover 34 .

Wherein, the double-layer board 31 includes a reflection board 311 and a transparent board 312 , the reflection board 311 is made of white ABS material and has good reflection properties.

The transparent plate 312 is formed above the reflecting plate 311 and has a groove 313 and an inclined surface 314. The inclined angle of the inclined surface 314 is between 10° and 30°, preferably 20°, wherein the thickness of the inclined surface 314 is relatively The groove 313 decreases from near to far, that is to say, the thickness of the inclined surface is greater as it gets closer to the groove 313 , and vice versa, the thickness becomes thinner. The transparent plate 312 is made of polycarbonate (Polycarbonate, PC).

The flexible circuit board 32 has a side-illuminated LED 33 and is accommodated in the groove 313 of the transparent plate 312, and the flexible circuit board 32 can provide power for the side-illuminated LED 33, and the side-illuminated light The diode 33 emits light toward the slope 314 .

The display cover 34 is covered on the double-layer board 31 and the flexible circuit board 32, wherein the display cover 34 has a light-transmitting area 341 and a non-light-transmitting area 342, which can be made by using an opaque Paint is coated on a transparent polycarbonate (Polycarbonate, PC) surface, and then a light-transmitting block 341 is engraved by laser engraving, so that light can be displayed through the light-transmitting block 341 .

Please refer to FIG. 4 , which is a schematic diagram of light traveling inside the double-layer board of the present invention. After the light enters the double-layer board 31, it will be refracted inside the transparent board 312 and reflected after hitting the reflector 311. , and finally emitted from the slope 314 of the transparent plate 312 , but the intensity of the light will gradually weaken with the distance it travels inside the transparent plate 312 .

In order to obtain uniform light output on the inclined surface 314, the inclined surface 314 of the transparent plate 312 of the present invention is designed to be thicker closer to the groove 313, and vice versa, the thickness is thinner. Previously, the traveling distance inside the transparent plate 312 is the same, as shown by light A and light B in the figure, the design of the inclined surface 314 can minimize the difference in the traveling distance of the two light rays, thereby obtaining a more uniform light output.

Therefore, the display panel of the present invention only needs one transparent plate to achieve the effect of uniform light, and does not need additional diffusion sheets and light uniform plates. Compared with the prior art, the present invention not only has fewer components, is easy to assemble, and It will also be thinner and less expensive.

Please refer to FIG. 5 , which is another embodiment of the display panel of the present invention. In this embodiment, the double-layer board 31 is designed to have multiple grooves 313 and multiple slopes 314. At the same time, the flexible circuit board 32 has a plurality of side-illuminated LEDs 33 (not shown in the figure) and are accommodated in the grooves 313 respectively.

The above-mentioned side-illuminated LEDs 33 may provide light sources of the same color, or may provide light sources of different colors respectively. If they are light sources of different colors, the above-mentioned side-illuminated LEDs 33 are separated from each other by the reflector 311 . Therefore, when the side-illuminated LEDs 33 of different colors emit light at the same time, there will be no problem of color mixing.

As can be seen from the above, compared with the prior art, the display panel of the electronic device of the present invention can not only reduce the number of components, but also achieve the effect of uniform light source. When using light sources of different colors for display, the present invention It is also blocked by a reflective plate to avoid the problem of color mixing.

The above descriptions are only descriptions of preferred embodiments of the present invention, and those with common knowledge in the technical field can make other various improvements and changes based on the descriptions of the above embodiments of the present invention. However, the various improvements and changes made according to the embodiments of the present invention should still fall within the spirit of the present invention and the scope of the defined claims.

Claims (8)

1. A display panel of an electronic device, characterized in that it comprises: The double-layer board is composed of a reflection board and a transparent board, and the above-mentioned transparent board is formed above the above-mentioned reflection board, and has grooves and slopes; The flexible circuit board has a side-illuminated light-emitting diode, and the above-mentioned side-illuminated light-emitting diode is accommodated in the groove of the above-mentioned transparent plate; and A display cover plate covering the above-mentioned double-layer board and the above-mentioned flexible circuit board, which has a light-transmitting block; Wherein, after the light emitted by the above-mentioned side-illuminated light-emitting diode enters the above-mentioned double-layer board, it encounters the above-mentioned reflecting plate for reflection, and is emitted from the above-mentioned slope of the above-mentioned transparent plate. 2. The display panel according to claim 1, wherein the transparent plate and the display cover are made of polycarbonate. 3. The display panel according to claim 1, wherein the reflector is made of opaque ABS plastic. 4. The display panel according to claim 1, wherein when the transparent plate has a plurality of grooves and a plurality of slopes, the flexible circuit board has a plurality of side-viewing elements respectively accommodated in the grooves. type light-emitting diodes. 5. The display panel according to claim 4, wherein the above-mentioned side-illuminated light-emitting diodes respectively provide light sources of different colors, and the two adjacent side-illuminated light-emitting diodes are separated by the reflector . 6. The display panel according to claim 1, wherein the inclination angle of the slope is between 10 and 30 degrees. 7 . The display panel according to claim 1 , wherein the thickness of the slope decreases gradually from near to far relative to the side-illuminated LED. 8 . 8. The display panel according to claim 1, wherein the electronic device has a light source indicating area, and the display panel is combined with the light source indicating area.

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