TWI692667B - Display device - Google Patents

Abstract

A display device includes a display panel, a light source module and a control unit. The display panel includes a plurality of display areas. The light source module includes a plurality of light source units. The light source units are configured to output a plurality of light beams to illuminate the display areas of the display panel. The control unit is coupled to the light source module and configured to receive a frame data. The frame data includes a plurality of subframe data, and the subframe data are displayed on the display areas. The control unit is further configured to control a first light source unit of the light source units to adjust a brightness corresponding to a first color of a first light beam of the light beams according to a ratio of the first color. The ratio of the first color is related to a first subframe data of the subframe data.

Description

Display device

The present disclosure is a display technology, and particularly relates to a display device.

Generally speaking, the light source of the reflective display outputs white light, and only the brightness can be adjusted. However, in the case of displaying a color screen, the displayed color saturation is therefore limited, and it is difficult to display a screen with a high color saturation.

One aspect of the present disclosure is to provide a display device including a display panel, a light source module, and a control unit. The display panel contains a plurality of display areas. The light source module includes a plurality of light source units. The light source units output a plurality of light beams to illuminate the display areas of the display panel. The control unit is coupled to the light source module and used to receive picture data. The picture data includes a plurality of sub-picture data, and the sub-picture data is displayed in the display areas. The control unit is further used to control the first light source units of the light source units according to the ratio of the first color, so as to adjust the color brightness corresponding to the first color among the first light beams of the light beams. The ratio of the first color is related to the first sub-picture data of the sub-picture data.

In one embodiment, the control unit is further used to control the first light source unit to increase the color brightness of the first light beam corresponding to the first color when it is determined that the ratio of the first color of the first sub-picture data is greater than the threshold.

In one embodiment, the control unit is further used to control the second light source units of the light source units according to the ratio of the second color to adjust the total color brightness of the second light beams of the light beams. The ratio of the second color is related to the second sub-picture data of the sub-picture data.

In one embodiment, the control unit is further used to control the second light source unit to reduce the total color brightness of the second light beam when it is determined that the ratio of the second color of the second sub-picture data is greater than the threshold.

In one embodiment, the first light source unit includes red, green and blue light emitting diodes. The control unit is further used to control the red, green and blue light emitting diodes of the first light source unit to adjust the color brightness of the first light beam corresponding to the first color according to the ratio of the first color of the first sub-picture data.

In one embodiment, the display device further includes a projection unit. The display device is used for projecting the light beams output by the light source units to the display areas of the display panel.

Another aspect of the present disclosure is to provide a light guide plate, a light source module and a control unit. The light source module is used to output a light beam to illuminate the light guide plate. The control unit is coupled to the light source module and used to receive picture data, and controls the light source module according to the ratio of the first color to adjust the color brightness corresponding to the first color in the light beam. The proportion of the first color is related to the picture data.

In one embodiment, the control unit is further used to control the light source module to increase the brightness of the color corresponding to the first color in the light beam when it is determined that the ratio of the first color of the picture data is greater than the threshold.

In one embodiment, the light source module includes red-green-blue light-emitting diodes or red-green-blue-white light-emitting diodes. The control unit is further used to control the red, green and blue light emitting diodes of the light source module according to the ratio of the first color of the picture data to adjust the color brightness of the light beam corresponding to the first color.

In one embodiment, the display device further includes a first adhesive layer and a second adhesive layer. The light guide plate is disposed between the first adhesive layer and the second adhesive layer. The refractive index of the light guide plate is greater than the refractive index of the first adhesive layer and the refractive index of the second adhesive layer, and an anti-glare film (AG film) or a cover plate or a touch panel can be laminated on the upper adhesive layer. In another display device, only the lower adhesive layer is connected to the reflective display. On the light guide plate, there is a cover plate or a touch panel on the light guide plate, with an air layer in the middle.

In summary, the control unit can adjust the color brightness of the corresponding color of the output beam of the light source module according to the color ratio of the screen data, thus effectively improving the color saturation of the screen data.

The above description will be described in detail in the following embodiments, and the technical solutions of the present disclosure will be further explained.

In order to make the above and other objects, features, advantages and embodiments of the disclosure more comprehensible, the attached symbols are described as follows:

100‧‧‧Display device

110‧‧‧light source module

120‧‧‧Display board

130‧‧‧Control unit

140‧‧‧Projection unit

A1~A16‧‧‧Display area

L1~L16‧‧‧Light source unit

300‧‧‧Display device

310‧‧‧Light source module

311~315‧‧‧ LED

320‧‧‧Light guide plate

330‧‧‧Control unit

411、412‧‧‧Glue layer

R, G, B, W ‧‧‧ color brightness

In order to make the above and other objects, features, advantages and embodiments of the disclosure more obvious and understandable, the attached drawings are explained as follows: FIG. 1 is a schematic diagram illustrating a display device of an embodiment of the disclosure; FIG. 2 It is a schematic diagram illustrating a light source module of a display device according to an embodiment of the disclosure; FIG. 3 is a schematic diagram illustrating a display device according to an embodiment of the disclosure; FIG. 4 is a diagram illustrating a display device according to an embodiment of the disclosure A schematic diagram of the light guide plate; and FIG. 5 is a schematic diagram illustrating the color brightness of the light beam irradiated by the light source module according to an embodiment of the disclosure.

In order to make the description of the present disclosure more detailed and complete, reference may be made to the drawings and various embodiments described below. However, the provided embodiments are not intended to limit the scope covered by the present disclosure; the description of the steps is not intended to limit the order in which they are executed. Any recombination that produces devices with equal effects are covered by the present disclosure Coverage.

In the embodiment and the scope of applying for a patent, unless there is a special limitation on articles in the text, "a" and "the" may refer to a single one or plural ones. It will be further understood that the terms "comprising," "including," "having," and similar words used herein indicate the features, regions, integers, steps, operations, elements, and/or components described therein, but do not exclude One or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof described or added thereto.

The terms "about", "approximately" or "approximately about" used in this article are generally within an error or range of about 20% of the index value, preferably within about 10%, and more preferably It is within about five percent. Unless otherwise stated in the text, the numerical values mentioned are regarded as approximate values, that is, errors or ranges as indicated by "about", "approximately" or "approximately about".

In addition, as used herein, "coupling" and "connection" can refer to two or more components directly making physical or electrical contact with each other, indirectly making physical or electrical contact with each other, or through wireless connection , And "coupled" can also refer to the interoperation or movement of two or more components.

Please refer to Figure 1 and Figure 2. FIG. 1 is a schematic diagram illustrating a display device 100 according to an embodiment of the disclosure. FIG. 2 is a schematic diagram illustrating the light source module 110 of the display device 100 according to an embodiment of the disclosure. The display device 100 includes a light source module 110, a display panel 120, and a control unit 130. The display panel 120 includes several display areas A1 to A16. The light source module 110 includes a plurality of light source units L1 to L16. The light source units L1 to L16 output a plurality of light beams to illuminate the display areas A1 to A16 of the display panel 120. The control unit 130 is coupled to the light source module 110 and used to receive image data. The screen data includes a plurality of sub-screen data, and the several sub-screen data are displayed in the display areas A1 to A16, respectively.

In one embodiment, the light source units L1 to L16 respectively illuminate the display areas A1 to A16. For example, the light beam output from the light source unit L1 illuminates the display area A1, the light beam output from the light source unit L2 illuminates the display area A2, ... the light beam output from the light source unit L16 illuminates the display area A16. It should be noted that the number and arrangement of the display areas A1 to A16 in FIG. 1 are only examples, and other arrangements of the display areas A1 to A16 are also included in the scope of this disclosure, and this disclosure is not limited to this .

In one embodiment, the light source units L1 to L16 include red, green, and blue light emitting diodes (RGB LEDs). In another embodiment, the light source units L1 to L16 may include red, green and blue light emitting diodes (RGB LEDs) and white light emitting diodes.

In one embodiment, the picture data may be color picture data. The control unit 130 is used to control the first light source units of the light source units L1 to L16 according to the ratio of the first color, so as to adjust the color brightness corresponding to the first color among the first light beams of the light beams. The ratio of the first color is related to the first sub-picture data of several sub-picture data. For example, the control unit 130 controls the light source unit L1 to adjust the color brightness of the corresponding red among the light beams irradiated to the display area A1 according to the ratio of the red of the sub-picture data displayed in the display area A1.

In one embodiment, when the control unit 130 determines that the red ratio of the sub-picture data displayed in the display area A1 is greater than the threshold (designed according to actual needs), the control unit 130 controls the light source unit L1 to increase the light beam irradiated to the display area A1 Which corresponds to the brightness of red color. Please refer to FIG. 5 and FIG. 1, the light source module 110 illuminates the light beam of the display panel 120, the red color brightness R, the green color brightness G, the blue color brightness B, and the white color brightness W before adjustment The line indicates that the control unit 130 controls the light source unit L1 to increase the color brightness R of red by a broken line. When the control unit 130 determines that the proportion of red in the sub-picture data (not shown) displayed in the display area A1 is high, the color brightness R of red among the light beams irradiated by the light source unit L1 to the display area A1 also increases, and the The color saturation is therefore effectively increased.

It should be noted that the control unit 130 can detect the ratio of multiple colors (for example, red, green, and blue, but not limited to the present disclosure) of several sub-picture data displayed in the display areas A1 to A16. The light source units L1 to L12 adjust the brightness of several colors corresponding to the colors (such as red, green, and blue, but not limited to this disclosure) of the light beams. For example, when the control unit 130 determines that the green ratio of the sub-picture data displayed in the display area A3 is greater than the threshold (designed according to actual needs), the control unit 130 controls the light source unit L3 to increase the corresponding amount of light beams irradiated to the display area A3 Green color brightness. As another example, when the control unit 130 determines that the blue ratio of the sub-picture data displayed in the display area A5 is greater than the threshold value (designed according to actual needs), the control unit 130 controls the light source unit L5 to increase the exposure to the display area A5. The brightness of the blue color in the beam. Similarly, the control unit 130 controls the light source according to the ratio of multiple colors (such as red, green, and blue, but not limited to the present disclosure) of each of the sub-picture data displayed in the display areas A1 to A16 Each of the units L1 to L12 adjusts the color brightness of the corresponding colors (such as red, green, and blue in the output beam, but this disclosure is not limited thereto).

In this way, the control unit 130 can control the light source units L1 to L16 to adjust the color brightness of the output beams respectively to increase the color saturation of the sub-picture data displayed in the display areas A1 to A16, thereby effectively improving the display quality.

In another embodiment, the picture data may be gray-scale picture data. The control unit 130 is further used to control the second light source units of the light source units L1 to L16 according to the ratio of the second color to adjust the total color brightness of the second light beams of the light beams. The ratio of the second color is related to the second sub-picture data of several sub-picture data. For example, the control unit 130 controls the light source unit L2 to adjust the total color brightness of the light beam irradiated to the display area A2 according to the black ratio of the sub-picture data displayed in the display area A2.

In one embodiment, when the control unit 130 determines that the black ratio of the sub-picture data displayed in the display area A2 is greater than the threshold (designed according to actual needs), the control unit 130 controls the light source unit L2 to reduce the light beam irradiated to the display area A2 The total color brightness (such as the color brightness of red, green, blue and white). When the sub-picture data with a high black ratio is displayed in the display area A2, the total color brightness of the light beam irradiated by the light source unit L2 to the display area A2 decreases. Similarly, the control unit 130 controls each of the light source units L1 to L16 to adjust the total color brightness of the output beam according to the black ratio of each of the sub-picture data displayed in the display areas A1 to A16, thus effectively improving the display area A1~A16 contrast.

In one embodiment, the display device 100 further includes a projection unit 140. The projection unit 140 is used to project the light beams output from the light source units L1 to L16 to the display areas A1 to A16 of the display panel 120. For example, the projection unit 140 is used to project the light beam output by the light source unit L1 to the display area A1, project the light beam output by the light source unit L2 to the display area A2, ... project the light beam output by the light source unit L16 to the display area A16 . It should be noted that the arrangement of the display areas A1 to A16 in FIG. 1 is only an example. Other arrangements of the display areas A1 to A16 are also covered by the scope of the present disclosure. The projection unit 140 can output the light source units L1 to L16 The light beam is projected onto the display areas A1~A16 with different arrangements.

Please refer to Figure 3. FIG. 3 is a schematic diagram illustrating a display device 300 according to an embodiment of the disclosure. The display device 300 includes a light source module 310, a light guide plate (LGP) 320, and a control unit 330. The light source module 310 is used to output a light beam to illuminate the light guide plate 320. The control unit 330 is coupled to the light source module 310.

In one embodiment, the picture data may be color picture data. The control unit 330 is used to receive the image data and control the light source module 310 according to the ratio of the first color to adjust the color brightness corresponding to the first color in the light beam. The ratio of the above-mentioned first color is related to the picture data. For example, the control unit 330 controls the light source module 310 to adjust the color brightness of the corresponding red in the light beam according to the ratio of the red displayed on the screen data.

In one embodiment, when the control unit 330 determines that the ratio of the red color of the picture data is greater than the threshold (designed according to actual requirements), the control unit 330 controls the light source module 310 to increase the color brightness of the corresponding red among the light beams illuminating the light guide plate 320. Please refer to FIG. 5, the red color brightness R, the green color brightness G, the blue color brightness B, and the white color brightness W before adjustment are indicated by solid lines. The control unit 330 controls the light source module 310 to increase the red color The brightness R is indicated by a dotted line. When the control unit 330 determines that the proportion of red in the picture data (not shown) is high, the color brightness R of the red light among the light beams irradiated by the light source module 310 on the light guide plate 320 also increases, and thus the color saturation is effectively improved. It should be noted that when the control unit 330 determines that the ratio of other colors (eg, green and blue) of the screen data is greater than the threshold (designed according to actual needs), the control unit 330 controls the light source module 310 to increase the light beam illuminating the light guide plate 320 The brightness of the corresponding colors (such as green and blue).

In this way, the control unit 330 can control the light source module 310 to adjust the color brightness of the output beam to increase the color saturation of the image data, thereby effectively improving the display quality.

In one embodiment, the light source module 310 includes red, green, and blue light emitting diodes (RGB LEDs) 312, 314 and white light emitting diodes 311, 313, 315. In another embodiment, the light source module 310 includes red, green, and blue light emitting diodes (RGB LEDs). The control unit 330 is further used to control the first color light emitting diode of the light source module 310 according to the ratio of the first color of the picture data to adjust the color brightness of the light beam illuminating the light guide plate 320 corresponding to the first color. For example, the control unit 330 is further used to control the red, green and blue light emitting diodes 312 and 314 of the light source module 310 according to the red ratio of the image data to adjust the color brightness of the corresponding red of the light beam illuminating the light guide plate 320.

In an embodiment, as shown in FIG. 4, the light guide plate 320 is disposed between the adhesive layer 410 and the adhesive layer 420. The refractive index of the light guide plate 320 is greater than the refractive index of the adhesive layer 411, and the refractive index of the light guide plate 320 is greater than the refractive index of the adhesive layer 412. In one embodiment, the adhesive layer 411 and the adhesive layer 412 are optical clear adhesives (Optical Clear Adhesive (OCA)), and an anti-glare film (AG film) or a cover plate or a touch panel can be laminated on the adhesive layer 411 Wait. In another display device, only the lower adhesive layer 412 is connected to the reflective display. On the light guide plate, there is a cover plate or a touch panel on the light guide plate. An air layer is located between the light guide plate and the cover plate or the touch panel.

In practice, the control units 130 and 330 can be circuits.

In summary, the control units 130 and 330 can adjust the color brightness of the corresponding colors of the output beams of the light source modules 110 and 310 according to the color ratio of the screen data, thus effectively increasing the color saturation of the screen data.

Although this disclosure has been disclosed as above by way of implementation, it is not intended to limit this disclosure. Anyone who is familiar with this skill can make various changes and retouching without departing from the spirit and scope of this disclosure. The scope of protection of the disclosure shall be deemed as defined by the scope of patent application.

100‧‧‧Display device

110‧‧‧light source module

120‧‧‧Display board

130‧‧‧Control unit

140‧‧‧Projection unit

A1~A16‧‧‧Display area

Claims (8)

A display device includes: a display panel including a plurality of display areas; a light source module including: a plurality of light source units for outputting a plurality of light beams to illuminate the display areas of the display panel; and a control unit, The light source module is coupled to receive a picture data, wherein the picture data includes a plurality of sub-picture data, the sub-picture data is displayed in the display areas, and the control unit is further used to control the picture according to a ratio of a first color A first light source unit of the light source units to adjust a brightness of a color corresponding to a first color among a first light beam of the light beams, wherein the ratio of the first color is related to a first child of the sub-picture data Picture data; wherein the control unit is further used to control the first light source unit to increase the first color in the first light beam when the ratio of the first color of the first sub-picture data is greater than a threshold Color brightness. The display device according to claim 1, wherein the control unit is further used to control a second light source unit of the light source units according to a ratio of a second color to adjust a total color of a second light beam of the light beams The brightness and the ratio of the second color are related to the second sub-picture data of the sub-picture data. The display device according to claim 2, wherein the control The unit is further used to control the second light source unit to reduce the total color brightness of the second light beam when it is determined that the ratio of the second color of the second sub-picture data is greater than the threshold. The display device according to claim 1, wherein the first light source unit includes a red, green, and blue light emitting diode, and the control unit is further used to control the first light source according to the ratio of the first color of the first sub-picture data The red, green and blue light emitting diodes of the light source unit adjust the color brightness corresponding to the first color in the first light beam. The display device according to claim 1, further comprising: a projection unit for projecting the light beams output by the light source units to the display areas of the display panel. A display device includes: a light guide plate; a light source module for outputting a light beam to illuminate the light guide plate; and a control unit coupled to the light source module and used to receive a picture data and according to a first color The ratio controls the light source module to adjust the brightness of a color corresponding to the first color in the light beam, wherein the ratio of the first color is related to the picture data; wherein the control unit is further used to determine the When the ratio of the first color is greater than a threshold, the light source module is controlled to increase the brightness of the color corresponding to the first color in the light beam. The display device according to claim 6, wherein the light source module includes a red-green-blue light-emitting diode, and the control unit is further used to control the red of the light source module according to the ratio of the first color of the picture data The green-blue light emitting diode adjusts the brightness of the color corresponding to the first color of the beam. The display device according to claim 6, further comprising: a first adhesive layer; and a second adhesive layer, wherein the light guide plate is disposed between the first adhesive layer and the second adhesive layer, the light guide plate The refractive index is greater than the refractive index of the first adhesive layer and the refractive index of the second adhesive layer.

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