JP3121625U - Structure of color mixing improvement in LCD panel backlight module display - Google Patents

Abstract

When displaying on a liquid crystal panel (LCD), light of different colors is prevented from overlapping and being mixed.
A light guide plate is overlapped on a reflection sheet, light emitting diodes (LEDs) of two or more colors are embedded on one side of the light guide plate, and the light guide plate is provided with a recess between the light emitting diodes. A liquid crystal panel is stacked on top. As a result, when a colored light source having a different color is generated from the light emitting diode, color mixing due to scattering is prevented by the separation of the recesses and the reflection of the edges of the recesses.
[Selection] Figure 3B

Description

  The present invention relates to a liquid crystal panel (LCD Panel) in which a concave portion is provided at an appropriate position of a light guide plate, and when different colors of light are emitted from a light emitting diode at the same time, the colored light of different colors does not cause color mixing due to irregularity. Especially when using a liquid crystal panel as a warning screen, the user can clearly distinguish between light areas of different facial colors and realize the warning effect, which is a structure for improving color mixing in the back light module display (LCD) The present invention relates to a structure for preventing color mixing in a backlight module display of a panel.

  Display devices for electronic products are increasingly using liquid crystal panels, and display results are displayed as warning signals with different color backgrounds. Users can know the results and deepen their impression by distinguishing colors. it can. For example, red can be applied to a point where attention is required, red is over the standard value, green is normal or standard, yellow is near the dangerous value, and so on.

  However, the liquid crystal panel of the known technology shown in FIGS. 1 and 2 is a liquid crystal panel used for a kind of electronic blood pressure monitor, and numbers, characters or designs are mainly displayed on the surface of the case body by the liquid crystal panel. A reflective sheet is provided below the liquid crystal panel, a light guide plate is provided between the reflective sheet and the liquid crystal panel, and two light emitting diodes (LEDs) are provided on one side of the light guide plate. Furthermore, these light emitting diodes generate colored light of different colors, these light emitting diodes are placed at a certain distance, and the colored light generated from the light emitting diodes can enhance the background display effect of the liquid crystal panel by the light guide plate and the reflective sheet. In addition, the light emitting diode can display normal, caution or danger that the user has set the blood pressure measurement result in advance in color. As an example, a normal blood pressure value can be set to be displayed in green, a yellow value close to a dangerous value can be displayed in yellow, and a red signal can be displayed when a dangerous value is exceeded.

  When this type of device is used, when the high blood pressure value measured by the user is normal and the low blood pressure value exceeds the danger value, the green and red colored lights generated from the light emitting diodes are transmitted through the light guide plate and the reflection sheet. The light is emitted to the back of the liquid crystal panel. However, since the color of the light emitting diode gradually diffuses to the outside at a certain angle when it is emitted to the outside, the light emitting diode has the result that the colored light of different colors overlaps the adjacent areas of the light guide plate, resulting in a mixed color result. Therefore, the user cannot be identified accurately. For this reason, the warning effect cannot be achieved effectively, which is not ideal.

  In response to the drawbacks of the liquid crystal panel backlight module device in the above-described known electric devices, the present inventors devised a structure for improving color mixing in the liquid crystal panel backlight module display of the present invention, and the backlight module differs depending on the structure of the present invention. Color area display can be generated at the same time, color mixing of the display color background can be prevented, and user inconvenience can be eliminated.

  One object of the present invention is mainly to provide a reflection sheet, a light guide plate overlaid on the reflection sheet, and provide light emitting diodes that generate two or more different colors on one side of the light guide plate, and the light guide plate further includes these light emitting diodes. A recess is provided between the two and a liquid crystal panel is provided on the light guide plate. With this structure, when the user's measurement results are displayed with light of different facial colors from the light-emitting diode, the liquid of the different facial colors is not mixed by the reflection of the concave part and the gap and the concave edge part. An object of the present invention is to provide a structure for improving color mixing in a liquid crystal panel back light module display which can notify the result of different color areas when displaying the result from a panel (LCD).

  Another object of the present invention is to provide a V-shaped cut in the recess, and this cut does not penetrate the light guide plate or provides a rectangular groove penetrating the light guide plate. However, this groove is intended to provide a structure for improving color mixing in a type of liquid crystal panel backlight module display that does not penetrate the entire backlight module in order to reduce assembly parts and manufacturing costs.

  The first device of the present application is a structure for improving color mixing in a type of liquid crystal panel backlight module display, a reflective sheet for reflecting light, a light guide plate provided on the reflective sheet, and two light guide plates on one side. The above light emitting diode is provided, the light emitting diode emits colored light of a preset display color, and the light guide plate having a certain distance between the light emitting diodes is provided with a recessed portion between the light emitting diode and the recessed portion. Does not penetrate the light guide plate, the recess is provided extending from one end to the other end of the light guide plate in the lateral direction, and is provided overlapping the light guide plate, the liquid crystal panel is composed of a liquid crystal panel displaying numbers, characters or designs, When generating colored light different from the light emitting diode due to the component configuration of, when separated by the dents, and reflected by the edges of the dents, when displaying more without color overlapping and mixing, To form a variety of background areas, clearly characterized by being configured so as to be displayed on the liquid crystal panel (LCD), provides a structure for color mixing improved in the liquid crystal panel back light module display.

  The second device of the present application provides a structure for improving color mixing in the liquid crystal panel back light module display of the first device, wherein the light emitting diode emits red, green or yellow colored light.

  A third device of the present application provides a structure for improving color mixing in a liquid crystal panel backlight module display of the first device, wherein the recess is a V-shaped cut.

  The fourth invention of the present application is characterized in that the light guide plate is provided with a protrusion at a symmetrical position of the recess, and the thickness of the light guide plate at this location can be increased to maintain the integrity of the light guide plate. A structure for improving color mixing in a liquid crystal panel backlight module display is provided.

  A fifth device of the present application is a structure for improving color mixing in a kind of liquid crystal panel backlight module display, a reflection sheet for reflecting light, a light guide plate provided on the reflection sheet, and two light guide plates on one side. The above light emitting diodes are provided, the light emitting diodes generate various colored lights, a certain distance is placed between the light emitting diodes, the light guide plate is provided with a recess between the light emitting diodes, and the recess is a light guide plate from the upper and lower sides. The recess extends in the horizontal direction from one end of the light guide plate to the other end so as not to penetrate the entire light guide plate, and is provided to overlap the liquid crystal panel and the light guide plate. With the liquid crystal panel displaying the above and the above-described component configuration, when colored light different from the light emitting diode is generated, the color is not overlapped and mixed due to the separation by the recess and the reflection at the edge of the recess. When more displays, to form a variety of background areas, clearly characterized by being configured so as to be displayed on the liquid crystal panel (LCD), provides a structure for color mixing improved in the liquid crystal panel back light module display.

  The sixth invention of the present application provides a structure for improving color mixing in the liquid crystal panel back light module display of the fifth invention, wherein the light emitting diode emits red, green or yellow colored light.

  According to a seventh aspect of the present invention, there is provided a structure for improving color mixing in a liquid crystal panel backlight module display according to the fifth aspect, wherein the recess has a rectangular groove structure.

  In order to further recognize and understand the object, shape, structure, apparatus, features and effects of the present invention, the following examples will be described in detail.

The present invention relates to a structure for improving color mixing in a kind of liquid crystal panel backlight module display, and what is shown in FIGS. 3A, 3B, 3C, and 3D is Embodiment 1 of the present invention.
In this embodiment, an electronic blood pressure monitor is illustrated, but those familiar with this type of technology can be applied to other electronic products.
In the present invention, a reflective sheet 10 is mainly provided on the case body 50, and the light source is reflected by the reflective sheet 10. A light guide panel (Light Guide Panel) 20 is provided on the reflection sheet 10 in an overlapping manner. One side of the light guide plate 20 is hidden behind the case body 50. Further, the light guide plate 20 is provided with two or more light emitting diodes (LEDs) 30 on the side thereof, and a certain distance is maintained between the light emitting diodes 30. Further, the liquid crystal panel 40 is provided on the light guide plate 20 so as to display numbers, characters or designs from the liquid crystal panel 40. The liquid crystal panel 40 does not cover the place where the light emitting diode 30 of the light guide plate 20 is embedded. Further, a V-shaped recess 21 (shown in FIGS. 3B, 3C, and 3D) that does not penetrate vertically is provided at a location where the light emitting diode 30 of the light guide plate 20 is not provided. The recess 21 is provided between the light emitting diodes 30 (shown in FIGS. 3B, 3C, and 3D). The recessed portion 21 is a method of penetrating the light guide plate 20 in the lateral direction, and maintains the integrity of the light guide plate 20 extending to the other end of the light guide plate 20. Further, the size and position of the recess 21 depend on the position of the light emitting diode 30 and the emission intensity of the colored light.

  When used, as shown in FIGS. 3A and 3B, the light emitting diode 30 is driven to generate colored light, and the reflective sheet 10 enhances the reflection of the colored light, and then the gap between the recessed portion 21 and the edge of the recessed portion 21. To reflect in the opposite direction to prevent color mixture (FIG. 3A) due to overlapping of colored light, and clearly project to the back of the liquid crystal panel 40. Since the user can easily identify the displayed numbers, characters or designs after the measurement, the effect of notification can be exhibited and the aesthetics of the entire module display can be improved.

  4A, 4B, 4C, and 4D show the second embodiment of the present invention. In this example, the reflective sheet 10 is mainly provided in the case body 50, and the light is reflected by the reflective sheet 10. The light guide plate 20 is provided on the reflection sheet 10, and one side of the light guide plate 20 is provided on the case body 50. Two or more light emitting diodes (LEDs) 30 are provided on the light guide plate 20, and a certain distance is placed between the light emitting diodes 30. Further, the liquid crystal panel 40 is provided on the light guide plate 20 so as to display numbers, characters or designs on the liquid crystal panel 40. The liquid crystal panel 40 does not block the place where the light emitting diode 30 is embedded in the light guide plate 20. Furthermore, a V-shaped recess 21 (shown in FIGS. 4B, 4C, and 4D) that is equal to or larger than the thickness of the light guide plate 20 is provided in a place where the light emitting diode 30 of the light guide plate 20 is not provided. (Shown in FIGS. 4B, 4C, and 4D), the recessed portion 21 extends to the other end of the light guide plate 20 by penetrating the light guide plate 20 in the lateral direction, and the light guide plate 20 is connected to the recessed portion 21. In addition to increasing the thickness of this place by providing protrusions 22 that protrude outwardly at symmetrical positions, the integrity of the entire light guide plate 20 (shown in FIGS. 4B and 4D) is maintained. The size and position of the recess 21 depend on the position of the light emitting diode 30 and the emission intensity of the colored light.

  When using, as shown in FIGS. 4A and 4B, the colored light is generated from the light emitting diode 30, and the reflection of the colored light is enhanced by the reflection sheet 10, and from the gap of the recessed portion 21 and the edge of the recessed portion 21, The light is refracted and reflected in the opposite direction to prevent color mixing (FIG. 4) due to overlapping of colored light, and is clearly projected onto the back surface of the liquid crystal panel 40. Since the user can easily identify the displayed numbers, characters or designs after the measurement, the effect of notification can be exhibited and the aesthetics of the entire module display can be improved.

  FIGS. 5A, 5B, 5C, and 5D show a third embodiment of the present invention. In this example, the reflective sheet 10 is mainly provided on the case body 50, and light is reflected by the reflective sheet 10. The light guide plate 20 is provided on the reflection sheet 10, and one side of the light guide plate 20 is provided on the case body 50. Two or more light emitting diodes (LEDs) 30 are provided on the light guide plate 20, a certain distance is provided between the light emitting diodes 30, and a liquid crystal panel 40 is provided on the light guide plate 20, and numbers and letters are provided on the liquid crystal panel 40. Or display the design. The liquid crystal panel 40 does not block the place where the light emitting diode 30 is embedded in the light guide plate 20. Furthermore, a V-shaped recess 21 that is equal to or larger than the thickness of the light guide plate 20 in a place where the light emitting diode 30 of the light guide plate 20 is not provided (other shapes may be provided for those familiar with this type of technology). (FIGS. 5B and 5C), the recess 21 is provided between the light emitting diodes 30 (FIGS. 5B and 5C), and the recess 21 is the other end of the light guide plate 20 in such a manner that the light guide plate 20 does not penetrate laterally. To maintain the integrity of the light guide plate 20 (FIG. 5B). Further, the size and position of the recess 21 depend on the position of the light emitting diode (LED) 30 and the emission intensity of the colored light.

  When used, as shown in FIGS. 5A and 5B, the light emitting diode 30 is driven to generate colored light, and the reflection of the colored light is enhanced by the reflection sheet 10, and from the gap of the recessed portion 21 and the edge of the recessed portion 21. The light is refracted and reflected in the opposite direction to prevent overlapping of colored light (FIG. 5A), and is clearly projected onto the back surface of the liquid crystal panel 40. Since the user can easily identify the displayed numbers, characters or designs after the measurement, the effect of notification can be exhibited and the aesthetics of the entire module display can be improved.

  The above-described embodiments are preferred embodiments of the present invention, and changes or modifications in the scope of creation of the present invention by those familiar with this type of technology are intended to be included in the claims category of the present invention.

FIG. 2 is a schematic view of a known apparatus. It is a cross-sectional combination schematic diagram of a known device. BRIEF DESCRIPTION OF THE DRAWINGS FIG. It is a side view combination schematic diagram in Example 1 of the present invention. It is a section combination schematic diagram in Example 1 of the present invention. It is an expansion schematic of the dent part of Example 1 of this invention. It is the under view schematic diagram of Example 2 of this invention. It is a side view combination schematic diagram in Example 2 of the present invention. It is a cross-sectional combination schematic in Example 2 of this invention. It is an expansion schematic of the dent part in Example 2 of this invention. FIG. 6 is a schematic view of a third embodiment of the present invention. It is a side view combination schematic diagram in Example 3 of the present invention. It is a cross-sectional combination schematic in Example 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Reflective sheet 20 Light guide plate 21 Recessed part 22 Projection body 30 Light emitting diode 40 Liquid crystal panel 50 Case body

Claims (7)

In the structure of color mixing improvement in a kind of LCD panel backlight module display,
A reflective sheet that reflects light;
A light guide plate provided over the reflective sheet;
The light guide plate is provided with two or more light emitting diodes on one side thereof, the light emitting diode emits colored light of a preset display color, and the light guide plate with a certain distance between the light emitting diodes is connected to the light emitting diode. A recess is provided in between, the recess does not penetrate the light guide plate, and the recess is provided extending from one end of the light guide plate to the other in the lateral direction,
Overlaid on the light guide plate, the liquid crystal panel consists of a liquid crystal panel that displays numbers, letters or designs,
Due to the above-mentioned component structure, when different colored light is generated from the light emitting diode, various background areas are formed when the display is performed without more color mixing due to separation by the recesses and reflection of the edges of the recesses. And, it is structured to be able to clearly display on the liquid crystal panel (LCD),
Structure for improving color mixing in LCD panel backlight module display.   2. The structure for improving color mixing in a liquid crystal panel backlight module display according to claim 1, wherein the light emitting diode emits red, green or yellow colored light.   2. The structure for improving color mixing in a liquid crystal panel backlight module display according to claim 1, wherein the recess is a V-shaped cut.   The color of the liquid crystal panel backlight module display according to claim 1, wherein the light guide plate is provided with a protrusion at a symmetrical position of the recess, and the thickness of the light guide plate can be increased to maintain the integrity of the light guide plate. Mixing improvement structure. In the structure of color mixing improvement in a kind of LCD panel backlight module display,
A reflective sheet that reflects light;
A light guide plate provided over the reflective sheet;
The light guide plate is provided with two or more light emitting diodes on one side, the light emitting diodes generate various colored lights, a certain distance is placed between the light emitting diodes, and the light guide plate is provided with a recess between the light emitting diodes. The dent portion penetrates the light guide plate from the upper and lower sides, the dent portion extends laterally from one end of the light guide plate to the other end so as not to penetrate the entire light guide plate,
A liquid crystal panel is provided on top of the light guide plate, and the liquid crystal panel displays numbers, letters or designs,
Due to the above-mentioned component structure, when different colored light is generated from the light emitting diode, various background areas are formed when the display is performed without more color mixing due to separation by the recesses and reflection of the edges of the recesses. And, it is structured to be able to clearly display on the liquid crystal panel (LCD),
Structure for improving color mixing in LCD panel backlight module display.   6. The structure for improving color mixing in a liquid crystal panel back light module display according to claim 5, wherein the light emitting diode emits red, green or yellow colored light. 6. The structure for improving color mixing in a liquid crystal panel backlight module display according to claim 5, wherein the recess has a rectangular groove structure.

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