Patent ID: 12189171

DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS

Reference will now be made in detail to the exemplary embodiments of the disclosure, and examples of the exemplary embodiments are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and descriptions to indicate the same or similar parts.

FIG.1is a schematic cross-sectional view of a display apparatus according to the first embodiment of the disclosure.FIG.2is a schematic top view of a first light source module inFIG.1.FIG.3is a schematic top view of a first light source module according to another modified embodiment of the disclosure.FIG.4is a schematic cross-sectional view of a display apparatus according to the second embodiment of the disclosure.

Referring toFIG.1, a display apparatus10includes a display panel DP, a first light source module LSM1, and a second light source module LSM2. The display panel DP has a display surface DS and a back surface BS away from the display surface DS. In this embodiment, the first light source module LSM1is disposed on a side of the display surface DS of the display panel DP, and overlaps the display surface DS. The second light source module LSM2is disposed on a side of the back surface BS of the display panel DP, and overlaps the display surface DS. In this embodiment, the display panel DP may be a transflective display panel or a micro transflective display panel. The first light source module LSM1may be used as a front light module of the display panel DP, and the second light source module LSM2may be used as a back light module of the display panel DP. However, the disclosure is not limited thereto.

In this embodiment, the first light source module LSM1may be an edge-type front light module, which may include a first light guide structure100and a first light source LS1. The first light guide structure100has a first light incident surface100isand a first light exit surface100es. The first light exit surface100esis connected to the first light incident surface100is, and is disposed opposite to the display surface DS of the display panel DP. The first light source LS1is disposed on a side of the first light incident surface100isof the first light guide structure100. In this embodiment, the first light guide structure100may be a light guide plate, a material of which includes, for example, polymethyl methacrylate (PMMA), polycarbonate (PC), or cyclo olefin copolymer (COP).

Referring toFIG.2, in detail, the first light incident surface100isof the first light guide structure100may include a first sub-surface100ss1and a second sub-surface100ss2and a third sub-surface100ss3bent and extended from two opposite sides of the first sub-surface100ss1. In this embodiment, an included angle A1between the second sub-surface100ss2and a virtual extension surface IMS of the first sub-surface100ss1and an included angle A2between the third sub-surface100ss3and the virtual extension surface IMS of the first sub-surface100ss1may be in a range of 30 degrees to 40 degrees.

The first light source LS1may include multiple first light emitting devices LED1and multiple of second light emitting devices LED2. The first light emitting devices LED1are disposed on a side of the first sub-surface100ss1of the first light guide structure100. The second light emitting devices LED2are disposed on two sides of the second sub-surface100ss2and the third sub-surface100ss3of the first light guide structure100. It should be noted that the first light emitting devices LED1are adapted to emit a light beam with a first color temperature, and the second light emitting devices LED2are adapted to emit a light beam with a second color temperature. The first color temperature is different from the second color temperature.

That is to say, in this embodiment, the first light source module LSM1not only may provide an illumination beam required for the display panel DP to display when ambient light is insufficient, but also has a function of adjusting a color temperature of a display image. Further, the first light source LS1may further include multiple third light emitting devices LED3disposed on the two sides of the second sub-surface100ss2and the third sub-surface100ss3of the first light guide structure100. The third light emitting devices LED3are adapted to emit a light beam with a third color temperature, and the third color temperature is different from the second color temperature and the first color temperature. For example, the second color temperature is 2700K. and the third color temperature is 5000K. However, the disclosure is not limited thereto. In this embodiment, emission colors of the first light emitting devices LED1include, for example, red, green, and blue, and emission colors of the second light emitting devices LED2and the third light emitting devices LED3include, for example, yellow, lake blue, color, and magenta.

In this embodiment, the first light emitting device LED1, the second light emitting device LED2, and the third light emitting device LED3may be light emitting diodes (such as micro light emitting diodes or mini light emitting diodes). However, the disclosure is not limited thereto.

In particular, the first light source module LSM1is suitable for the display apparatus with a display size below 8 inches. Referring toFIG.3, in order to enable the display apparatus with a display size higher than 8 inches to also have the function of adjusting the color temperature, in another modified embodiment, a first light incident surface100is-A of a first light guide structure100A of a first light source module LSM1-A may further include a fourth sub-surface100ss4. The fourth sub-surface100ss4is connected to a second sub-surface100ss2-A and a third sub-surface100ss3-A, and is disposed opposite to a first sub-surface100ss1-A. It is particularly noted that the first light emitting devices LED1are also disposed on a side of the fourth sub-surface100ss4of the first light guide structure100A.

In the modified embodiment, an included angle A3between the first sub-surface100ss1-A and the second sub-surface100ss2-A, an included angle A4between the first sub-surface100ss1-A and the third sub-surface100ss3-A, an included angle A5between the second sub-surface100ss2-A and the fourth sub-surface100ss4, and an included angle A6between the third sub-surface100ss3-A and the fourth sub-surface100ss4are all 90 degrees. That is to say, the first light incident surface100is-A of the first light guide structure100A in the modified embodiment is rectangular in a normal direction of a first light exit surface100es-A. The first light emitting devices LED1for illumination are respectively disposed on two opposite sides of the first light guide structure100A along a first direction. The second light emitting devices LED2and the third light emitting devices LED3for adjusting the color temperature are respectively disposed on the two opposite sides of the first light guide structure100A along a second direction. The first direction is perpendicular to the second direction.

Referring toFIG.1, in this embodiment, an optical adhesive layer150is disposed between the first light guide structure100and the display panel DP, and the optical adhesive layer150is connected to the first light exit surface100esof the first light guide structure100and the display surface DS of the display panel DP. The optical adhesive layer150is, for example, formed by optically clear resin (OCR), an optically clear adhesive (OCA), or other suitable optical-grade adhesive materials coated on the display surface DS. However, the disclosure is not limited thereto. In another embodiment ofFIG.4, a fixed relationship between the first light guide structure100of a display apparatus10A and the display panel DP may also be implemented through an air adhesive (tape)150A distributed around the display surface DS. That is, an air gap layer AG defined by the air adhesive (tape)150A may be disposed between the first light guide structure100and the display panel DP, and the air gap layer AG exposes the first light exit surface100esof the first light guide structure100and the display surface DS of the display panel DP.

Continuing to refer toFIG.1, in this embodiment, the second light source module LSM2may be an edge-type back light module, which may include a second light guide structure200and a second light source LS2. The second light guide structure200has a second light incident surface200isand a second light exit surface200es. The second light exit surface200esis connected to the second light incident surface200is, and is disposed opposite to the back surface BS of the display panel DP. The second light source LS2is disposed on a side of the second light incident surface200isof the second light guide structure200. For example, in this embodiment, the second light source module LSM2may provide the illumination beam required for the display panel DP to display when the ambient light is insufficient, and a light beam emitted by the second light source LS2has only a single color temperature. That is, the second light source module LSM2as the back light module does not have the function of adjusting the color temperature. The second light guide structure200may be the light guide plate, a material of which includes, for example, polymethyl methacrylate (PMMA), polycarbonate (PC), or cyclo olefin copolymer (COP).

The first light source module LSM1and the second light source module LSM2are respectively disposed on the two opposite sides of the display surface DS and the back surface BS of the display panel DP, which may increase design flexibility of the display apparatus10to meet different application requirements. On the other hand, the second light source module LSM2and the display panel DP may optionally be provided with an optical film250. The optical film250includes, for example, a diffusion film, an optical brightness enhancement film, at least one prism sheet, or a combination thereof.

Some other embodiments are provided below to describe the invention in detail, where the same reference numerals denote the same or like components, and descriptions of the same technical contents are omitted. The aforementioned embodiment may be referred for descriptions of the omitted parts, and detailed descriptions thereof are not repeated in the following embodiment.

FIG.5is a schematic side view of a display apparatus according to the third embodiment of the disclosure.FIG.6is a schematic top view of the display apparatus inFIG.5. Referring toFIGS.5and6, a difference between a display apparatus10B in this embodiment and the display apparatus10inFIG.1lies in that a structure of the first light source module is different. Specifically, in this embodiment, a first light guide structure100B of a first light source module LSM1-B of the display apparatus10B may be a light guide bar or an optical fiber, and is disposed around the display surface DS of the display panel DP.

It should be noted that in this embodiment, a first light exit surface100es-B and a first light incident surface100is-B of the first light guide structure100B may be optionally perpendicular to the display surface DS of the display panel DP, and the first light exit surface100es-B is substantially rectangular in a normal direction of the display surface DS. In this embodiment, a first light source LS1-B may be a light emitting diode (such as a micro light emitting diode or a mini light emitting diode) or a laser element. However, the disclosure is not limited thereto.

FIG.7is a schematic cross-sectional view of a display apparatus according to the fourth embodiment of the disclosure. Referring toFIG.7, a difference between a display apparatus10C in this embodiment and the display apparatus10inFIG.1lies in that a structure of the second light source module is different. Specifically, in the display apparatus10C of this embodiment, a second light source module LSM2-A may be a direct type back light module, and may include a circuit back plate CB and multiple light emitting devices LED″. The light emitting devices LED″ are arranged in an array on a surface of the circuit back plate CB facing the display panel DP, and are electrically connected to the circuit back plate CB.

In this embodiment, the circuit back plate CB is adapted to control the light emitting devices LED″ to emit light independently. Therefore, different light emitting areas may have different light emitting brightnesses, that is, local dimming. Accordingly, display contrast of the display apparatus10C may be effectively improved. However, the disclosure is not limited thereto. In an unillustrated modified embodiment, the light emitting devices of the second light source module may be arranged at intervals on the circuit back plate in a form of multiple light bars, and the circuit back plate is adapted to control the light bars to emit the light independently. Therefore, the line dimming may be implemented. In particular, a function of the line dimming is also suitable for an edge-type light source module (such as the second light source module LSM2inFIG.5).

On the other hand, in this embodiment, the optical film250inFIG.1is not disposed between the display panel DP and the second light source module LSM2-A.

FIG.8is a schematic cross-sectional view of a display apparatus according to the fifth embodiment of the disclosure.FIG.9is a schematic top view of a first light source module inFIG.8. Referring toFIGS.8and9, a difference between a display apparatus20in this embodiment and the display apparatus10inFIG.1lies in that a configuration relationship between the two light source modules and the display panel and a composition structure of the first light source module are different.

In the display apparatus20of this embodiment, a first light source module LSM1-C may be used as the back light module of the display panel DP, and the second light source module LSM2may be used as the front light module of the display panel DP. However, the disclosure is not limited thereto. It should be noted that in this embodiment, a first light guide structure100C of the first light source module LSM1-C may have a light incident surface100is1and a light incident surface100is2opposite to each other, and a first light source LS1-C is disposed on two sides of the two light incident surfaces of the first light guide structure100C.

In detail, in this embodiment, a method of disposing the light incident surface100is1of the first light guide structure100C and the first light source LS1-C on a side of the light incident surface100is1of the first light guide structure100C is similar to a method of disposing the first light incident surface100isof the first light guide structure100of the first light source module LSM1and the first light source LS1on a side of the light incident surface100isof the first light guide structure100inFIG.2. Therefore, relevant paragraphs of the aforementioned embodiments may be referred for detailed description. Therefore, the same details will not be repeated in the following.

Different from the first light source module LSM1shown inFIG.2, another light incident surface100is2of the first light guide structure100C in this embodiment may also include a first sub-surface100ss1″, a second sub-surface100ss2″, and a third sub-surface100ss3″. A configuration relationship between the sub-surfaces of the light surface100is2is optionally the same as a configuration relationship among the first sub-surface100ss1, the second sub-surface100ss2, and the third sub-surface100ss3of the light incident surface100is1. Therefore, the same details will not be repeated in the following.

It should be noted that in this embodiment, the first light guide structure100C is also provided with the second light emitting devices LED2and the third light emitting devices LED3on two sides of the second sub-surface100ss2″ and the third sub-surface100ss3″ of the light incident surface100is2, configured to adjust the color temperature of the display image. More specifically, different from the display apparatus10inFIG.1, in this embodiment, the first light source module LSM1-C with the functions of lighting and adjusting the color temperature of the display image may also be used as the back light module of the display panel DP.

Based on the above, in the display apparatus according to an embodiment of the present invention, the two light source modules are respectively disposed on the two opposite sides of the display surface and the back surface of the display panel. One of the light source modules is configured to provide illumination light required for the display panel, and the other light source module is configured to adjust the color and the color temperature of the display image. Through the above combination and collocation, different application requirements for the display apparatus may be met.

Lastly, it is to be noted that: the embodiments described above are only used to illustrate the technical solutions of the disclosure, and not to limit the disclosure; although the disclosure is described in detail with reference to the embodiments, those skilled in the art should understand: it is still possible to modify the technical solutions recorded in the embodiments, or to equivalently replace some or all of the technical features; the modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments.