TWI623925B - Display device and light-emitting control method thereof - Google Patents

Abstract

A display and a method of controlling the same. The display includes a screen, a first illuminating element, and a second illuminating element. The screen has a back and one side. The first light-emitting element is disposed on the back surface at 1/3 of the side of the corresponding light-emitting element. The second light-emitting element is disposed on the back side at 2/3 of the side of the corresponding light-emitting element.

Description

Display and its illumination control method

The present invention relates to a display and a light-emitting control method thereof, and relates to a display having a light-emitting element disposed on a back surface thereof and a light-emitting control method thereof.

When using a monitor, sometimes the ambient brightness may be insufficient, for example, dimming the brightness of the environment in which the monitor is located. Thus, the difference in brightness between the brightness of the screen of the display and the brightness of the wall behind the screen is too large, causing the viewer's eyes to fatigue.

Therefore, there is a need to propose a new display to improve the aforementioned conventional problems.

Embodiments of the present invention provide a display and a method of controlling the same thereof, which can improve the conventional problem.

According to an embodiment of the invention, a display is presented. The display includes a screen, a first illuminating element and a second illuminating element. The screen has a back Face and a first side. The first light-emitting element is disposed on the back surface corresponding to 1/3 of the first side. The second light-emitting element is disposed on the back side at 2/3 of the first side.

According to another embodiment of the present invention, a method of controlling illumination of a display as described above is proposed. The illumination control method includes the following steps. Loading an application; determining whether there is a lighting parameter corresponding to the application; if there is a lighting parameter, reading the lighting parameter and controlling the first lighting element and the second lighting element of the display to emit light according to the lighting parameter; and, if no lighting A parameter that records the dimming information made to the application when the application is opened as a lighting parameter.

In order to better understand the above and other aspects of the present invention, the following detailed description of the embodiments and the accompanying drawings are set forth below, but not limited thereto.

10‧‧‧Host

100, 200, 300, 400‧‧‧ display

110‧‧‧ screen

110a‧‧‧ positive

110b‧‧‧Back

110e1‧‧‧ first side

110e2‧‧‧ first endpoint

110e3‧‧‧second endpoint

120, 420‧‧‧ first light-emitting elements

121‧‧‧Light tube

121e‧‧‧ end face

121s‧‧‧Week

122‧‧‧ shaft

1221, 1271‧‧‧ end

123‧‧‧Lighting elements

124‧‧‧Connecting Department

124s‧‧‧ connection surface

125‧‧‧ drive

127‧‧‧ Reflector

127a‧‧‧ openings

127r‧‧‧ 容 部

130, 430‧‧‧second light-emitting elements

140‧‧‧ bracket

150‧‧‧ Controller

160‧‧‧Signal input and output

335‧‧‧ Third light-emitting element

a _1,1 , a _1,2 , a _1,3 , a _2,1 , a _2,3 , a _3,1 , a _3,3 , a _4,1 , a _4,3 ‧‧‧

A1, A2‧‧‧ angle

L1‧‧‧ reflected light

P1‧‧‧ application

S1‧‧‧ wall

S110, S120, S130, S140‧‧ steps

W, W1, W2, W3‧‧‧ length

1A is a rear elevational view of a display in accordance with an embodiment of the present invention.

Fig. 1B is a side view showing the display of Fig. 1A.

2 is a rear elevational view of a display in accordance with another embodiment of the present invention.

Figure 3 is a rear elevational view of the display in accordance with another embodiment of the present invention.

Figure 4 is a rear elevational view of the display in accordance with another embodiment of the present invention.

Figure 5 is a diagram showing the luminance distribution of the reflected light of Figure 1B reflected from the wall.

Fig. 6 is a view showing the configuration of the first light-emitting element of Fig. 1.

Fig. 7 is a view showing another configuration of the first light-emitting element of Fig. 1.

Figure 8 is a functional block diagram showing some of the components of the display of Figure 1.

FIG. 9 is a flow chart showing a method of controlling the illumination of the display of FIG. 1.

1A is a rear view of a display 100 in accordance with an embodiment of the present invention, and FIG. 1B is a side view of the display 100 of FIG. 1A.

The display 100 includes a screen 110, a first illuminating element 120, a second illuminating element 130, and a bracket 140. The screen 110 has a front surface 110a, a back surface 110b, and a first side 110e1. The first light-emitting element 120 is disposed on the back surface 110b corresponding to the length W1 of the first side 110e1 by about 1/3, and the second light-emitting element 130 is disposed on the back surface 110b corresponding to the length of the first side 110e1 by about 2/3. For example, the position of the first illuminating element 120 corresponds to the length W1 of the first side 110e1 from the first end point 110e2, wherein the length W1 is 1/3 of the total length W of the first side 110e1, and the second illuminating element 130 The position corresponds to the first side 110e1 starting from the first end point 110e2, wherein the length W3 is 2/3 of the total length W; or the position of the first illuminating element 120 corresponds to the first side 110e1 from the first end The point 110e2 starts from the length W1, and the position of the second light-emitting element 130 corresponds to the length W2 from the second end point 110e3 of the first side 110e1, wherein the length W2 is 1/3 of the total length W.

As shown in FIG. 1B, the back surface 110b of the screen 110 faces the wall S1, and when the image is displayed on the front surface 110a for viewing by the user, the light emitted from the first light-emitting element 120 and the second light-emitting element 130 away from the back surface 110b can be projected onto the wall. S1 and reflected from the wall S1. In other words, the light-emitting directions of the first light-emitting element 120 and the second light-emitting element 130 are from the front surface 110a to the rear surface 110b. Thus, the brightness between the brightness of the reflected light L1 reflected from the wall S1 and the display brightness of the front surface 110a is bright The narrowing of the difference can slow down the discomfort of the viewer's eyes and make the eyes less prone to fatigue. In addition, the first side 110e1 herein may be the outermost boundary of the screen 110 or one of the outermost boundaries.

As shown in FIGS. 1A and 1B, the bracket 140 is disposed on the back surface 110b and closer to the wall S1 than the back surface 110b. The first light-emitting element 120 and the second light-emitting element 130 are disposed on the back surface 110b instead of the bracket 140, that is, the first light-emitting element 120 and the second light-emitting element 130 are respectively disposed adjacent to opposite sides of the bracket 140, but are not disposed on the bracket. 140 on. Therefore, by maintaining an appropriate long distance from the wall S1, the range of the reflected light L1 can be expanded.

As shown in FIG. 1A, the first side 110e1 of the screen 110 is, for example, an upper horizontal side. In this embodiment, the first light emitting element 120 and the second light emitting element 130 are strip light sources, wherein the long axis of the first light emitting element 120 and the long axis of the second light emitting element 130 are substantially perpendicular to the first side 110e1, The embodiments of the present invention are not limited thereto.

FIG. 2 is a rear elevational view of display 200 in accordance with another embodiment of the present invention. The display 200 includes a screen 110, a first light emitting element 120, a second light emitting element 130, and a bracket 140. Different from the display 100 described above, the long axis of the first light emitting element 120 and the long axis of the second light emitting element 130 of the display 200 of the present embodiment are inclined to the first side 110e1. For example, the angle A1 between the first light-emitting element 120 and the first side 110e1 is an acute angle, and the angle A2 between the second light-emitting element 130 and the first side 110e1 is also an acute angle. In another embodiment, the included angles A1 and A2 may be obtuse angles; or one of the included angles A1 and A2 may be an acute angle and the other is an obtuse angle.

In addition, the first light-emitting element 120 of FIG. 2 can be any part thereof. One third of the first side 110e1 is disposed on the back surface 110b. For example, the first light-emitting element 120 may be disposed on the back surface 110b at an arbitrary position between either or both ends corresponding to 1/3 of the first side 110e1. Similarly, the second light-emitting element 130 of FIG. 2 may be disposed on the back surface 110b at any portion corresponding to the first side 110e1 of the first side 110e1; for example, the second light-emitting element 130 may be any portion between the two ends 2/3 of the first side 110e1 is disposed on the back surface 110b.

FIG. 3 is a rear elevational view of display 300 in accordance with another embodiment of the present invention. The display 300 includes a screen 110, a first light emitting element 120, a second light emitting element 130, a third light emitting element 335, and a bracket 140.

Different from the foregoing display 100, the display 300 of the embodiment further includes a third light-emitting element 335, wherein the third light-emitting element 335 is disposed on the back surface 110b, and the long axis of the third light-emitting element 335 is substantially parallel to the first side 110e1 The first light-emitting element 120, the second light-emitting element 130, and the third light-emitting element 335 are substantially configured to form a U-shaped light-emitting structure. In addition, the two ends of the third light-emitting element 335 of the display 300 may respectively contact the first light-emitting element 120 and the second light-emitting element 130, but may not be in contact.

4 is a rear elevational view of display 400 in accordance with another embodiment of the present invention. The display 400 includes a screen 110, a plurality of first light emitting elements 420, a plurality of second light emitting elements 430, and a bracket 140.

Different from the display 100 described above, the first illuminating element 420 and the second illuminating element 430 of the present embodiment are point light sources, wherein the first illuminating elements 420 are arranged to be similar to the length of the first illuminating element 120 of FIG. Strips, and these The second light-emitting elements 430 are arranged in a strip shape similar to the second light-emitting elements 130 of FIG. In another embodiment, the display 400 further includes a plurality of dot-shaped third light-emitting elements that are arranged in a strip shape similar to the third light-emitting element 335 of FIG.

In summary, the first light-emitting element and the second light-emitting element of the embodiment of the present invention are respectively disposed corresponding to 1/3 and 2/3 of the first side, and can reduce the brightness of the reflected light L1 from the wall and the display brightness of the screen 110. The difference in brightness between them is to slow the discomfort of the viewer's eyes and make the eyes less prone to fatigue. In an embodiment, the long axis of the first illuminating element and/or the second illuminating element may be substantially perpendicular or inclined to the first side. In another embodiment, the long axis of the third illuminating element is substantially parallel to the first side, and the first illuminating element, the second illuminating element and the at least one third illuminating element may be configured in a U shape or a ring shape. Further, the first light-emitting element, the second light-emitting element, and/or the third light-emitting element disposed on the back surface 110b may be a strip light source or a point light source.

Fig. 5 is a view showing a luminance distribution of the reflected light L1 of Fig. 1B reflected from the wall S1. The dotted line area of Fig. 5 is a front view of the display 100. The wall S1 behind the display 100 is divided into a plurality of areas, such as 12 areas a _i,j , where i is equal to or less than 3, and j is equal to or less than 4, and the brightness of several areas in which the display 100 is not overlapped is taken as Test objects such as the regions a _1,1 , a _1,2 , a _1,3 , a _2,1 , a _2,3 , a _3,1 , a _3,3 , a _4,1 and a _4,3 .

In the display 100 of FIG. 1A, the luminance of the area a _1,1 is 250 lux _, the luminance of the area a _1,2 is 120 lux, and the luminance of the area a _1,3 is 260 lux, the area a _2, The brightness of ₁ is 370 lux, the brightness of area a _{2, 3} is 390 lux, the brightness of area a _{3, 1} is 350 lux, the brightness of area a _{3, 3} is 400 lux, and the brightness of area a _{4, 1} is 320 lux. And the brightness of the area a _{4, 3} is 340 lux. It is seen, due to the design of the first light emitting element 120 and the second display 100 of the light emitting element 120, so that the walls S1 luminance minimum reflectance of not less than 120 lux (e.g., a luminance region _1,2), and may reduce the luminance difference to the maximum Within 3 times. Since the minimum reflected brightness of the wall S1 is not less than 120 lux, the eyes do not feel uncomfortable when the viewer shifts the line of sight to the area.

The aforementioned "maximum brightness difference" refers to the difference between the highest display brightness of the screen 110 and the lowest brightness of the reflected light L1. In detail, if the first light-emitting element 120 and/or the second light-emitting element 130 of the embodiment of the present invention are omitted, the maximum brightness difference may be more than three times, which may cause the viewer's eyes to be easily fatigued. In contrast, the display 100 of the embodiment of the present invention can reduce the maximum brightness difference to within 3 times, so that the viewer's eyes are not easily fatigued.

In the display 300 of Fig. 3, the luminance of the area a _1,1 is 430 lux, the luminance of the area a _1,2 is 870 lux, the luminance of the area a _1,3 is 450 lux, and the luminance of the area a _2,1 600 lux, the area a _{2,3 has} a brightness of 600 lux, the area a _{3,1 has} a brightness of 540 lux, the area a _{3,3 has} a brightness of 550 lux, the area a _{4,1 has} a brightness of 500 lux and the area a The brightness of _4,3 is 580 lux. It can be seen that, due to the design of the first illuminating element 120, the second illuminating element 120 and the third illuminating element 335 of the display 300, the minimum reflected brightness of the wall S1 is not lower than 430 lux (such as the brightness of the area a _1,1 ), and The maximum brightness difference can be reduced to within 3 times.

In addition, the display 200 of FIG. 2 and the display 400 of FIG. 4 have similar effects, and are not described herein again.

Fig. 6 is a view showing the configuration of the first light-emitting element 120 of Fig. 1. The light exit angle of the first light emitting element 120 can be adjusted. For example, the first light emitting element 120 includes a light transmitting tube 121 , a rotating shaft 122 , at least one light emitting element 123 , and a connecting portion 124 . The light transmission tube 121 has an end surface 121e. The rotating shaft 122 is rotatably disposed in the light-transmitting tube 121. One end 1221 of the rotating shaft 122 protrudes from the end surface 121e, so that the user can rotate the rotating shaft 122 to adjust the light-emitting angle of the light-emitting element 123. Further, the end surface 121e may be coated with a light shielding layer or a light reflecting layer (such as a cross section) to prevent light of the light emitting element 123 from leaking light from the end surface 121e. The light transmission tube 121 has a circumferential surface 121s, and a part of the circumferential surface 121s (such as a half-circumferential area) may be coated with a light shielding layer or a light reflecting layer (such as a cross section), and the light of the light emitting element 123 may be directed to the peripheral surface 121s. Part of the focus is concentrated to increase the light intensity.

Additionally, one end 1221 of the shaft 122 can be coupled to a driver 125, such as a motor. The driver 125 can drive the rotating shaft 122 to adjust the light exiting angle of the light emitting element 123.

The light emitting element 123 is disposed on the rotating shaft 122. When the rotating shaft 122 rotates, the light-emitting angle of the light-emitting element 123 can be adjusted. For example, the angle between the optical axis of the light-emitting element 123 and the back surface 110b may be between 45 degrees and 135 degrees.

The connecting portion 124 is connected to the light transmitting tube 121, and the first light emitting element 120 is fixed to the back surface 110b by the connecting surface 124s of the connecting portion 124. The connecting surface 124s of the connecting portion 124 is a flat surface, and the back surface 110b may be a flat surface, which increases the contact area between the connecting surface 124s and the back surface 110b, and further increases the bonding property between the connecting surface 124s and the back surface 110b.

The second light emitting element 130 and the third light emitting element 335 may have similarities The structure of the light-transmitting tube 121, the rotating shaft 122, the light-emitting element 123, and the connecting portion 124 of the first light-emitting element 120 in FIG. 6 will not be described herein.

FIG. 7 is a view showing another configuration of the first light-emitting element 120 of FIG. 1. The first light emitting element 120 includes a light transmitting tube 121, a reflector 127, and at least one light emitting element 123. The light transmission tube 121 has an end surface 121e. The light emitting element 123 is disposed in the light transmitting tube 121. The reflector 127 is rotatably disposed in the light-transmitting tube 121. One end 1271 of the reflector 127 protrudes from the end surface 121e, so that the user can rotate the reflector 127 to adjust the light-emitting angle of the light-emitting element 123. The reflector 127 has a receiving portion 127r. The light-emitting element 123 can be disposed corresponding to the accommodating portion 127r to change the position of the opening 127a of the accommodating portion 127r when the reflector 127 is rotated to adjust the angle at which the light-emitting element 123 emits light from the opening 127a. . In an embodiment, the angle between the optical axis of the light-emitting element 123 and the back surface 110b may be between 45 degrees and 135 degrees.

In addition, one end 1271 of the reflector 127 can be coupled to the driver 125. The driver 125 can drive the reflector 127 to adjust the light exit angle of the light emitting element 123.

The second light-emitting element 130 and the third light-emitting element 335 may have a structure similar to the light-transmitting tube 121, the reflector 127, and the light-emitting element 123 of the first light-emitting element 120 of FIG. 8 , and details are not described herein. However, as long as the light-emitting angles of the first light-emitting element, the second light-emitting element, and the third light-emitting element can be adjusted, the embodiment of the present invention does not limit the mechanism for adjusting the light angle.

FIG. 8 is a functional block diagram showing some components of the display 100 of FIG. 1. The display 100 further includes a controller 150 and a signal output port 160. The first light emitting element 120 and the second light emitting element 130 are controlled by the controller 150 to actively Or passively adjust the brightness. In another embodiment, the driver 125 described above can be controlled by the controller 150 to actively or passively adjust the light angle. The controller 150 can be connected to a host 10 via a signal output port 160, such as a server, a notebook computer, a tablet computer, a mobile phone, or other electronic device that can operate or require the display 100. In another embodiment, the controller 150 can be configured in the host 10. In this design, the controller 150 of the host 10 controls the first light emitting element 120 and/or the second light emitting element 130 through the signal output port 160. In an embodiment, the signal input/output port 160 may be a High Definition Multimedia Interface (HDMI) or a Universal Serial Bus (USB). Further, the controller 150 may be a central processing unit (CPU).

The host 10 can provide an On Screen Display, which allows the user to adjust the brightness and/or the light exit angle of the first light-emitting element 120 and/or the second light-emitting element 130 through the video control system. In another embodiment, display 100 itself may provide a similar video control system.

In addition, the displays 200, 300, and 400 may include components such as the controller 150 of the display 100 and the signal output port 160, which are not described herein.

FIG. 9 is a flow chart showing a method of controlling the illumination of the display 100 of FIG. 1.

In step S110, referring to Fig. 8, the controller 150 loads an application P1. The application P1 can be a word processing software, a game, a video player, a web browser or any other application.

In step S120, the controller 150 determines whether there is a corresponding application. A light-emitting parameter of the formula P1 is, for example, the light-emitting luminance, the light-emitting angle, and/or the light-emitting color of the first light-emitting element 120 and/or the second light-emitting element 130. The illumination parameters can be stored in a component of the host 10 or display 100, such as controller 150 or memory. If there is no corresponding lighting parameter of the application P1, the process proceeds to step S130; if yes, the process proceeds to step S140.

In step S130, the controller 150 reads the lighting parameters of the corresponding application P1, and automatically controls the first lighting element 120 and/or the second lighting element 130 of the display 100 to emit light according to the lighting parameters. In this way, the user does not need to manually adjust the light-emitting brightness, the light-emitting angle, and/or the light-emitting color of the first light-emitting element 120 and/or the second light-emitting element 130.

In step S140, if there is no corresponding lighting parameter of the application P1, the controller 150 can record the dimming information (if any) or the current lighting information made by the application P1 when the application P1 is turned on as Luminous parameters. When the application P1 is turned on next time, the controller 150 can control the first light-emitting element 120 and/or the second light-emitting element 130 to emit light according to the light-emitting parameters, so that the next time the application P1 is opened, the user does not need to touch the first light again. Element 120 and/or second light emitting element 130 performs illumination adjustment.

In another embodiment, if the lighting parameter of the corresponding application P1 is already present, if the first lighting element 120 and/or the second lighting element 130 are dimmed when the application P1 is turned on, the controller 150 Also record dimming information and use it as the latest lighting parameter. When the application P1 is opened again next time, the controller 150 can control the display 100 to emit light according to the latest lighting parameters, so that the user does not need to The first light-emitting element 120 and/or the second light-emitting element 130 are illuminatingly adjusted.

In addition, the illumination control methods of the displays 200, 300, and 400 are similar to the illumination control methods of the foregoing display 100, and are not described herein again.

In the above, the present invention has been disclosed in several embodiments, but it is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

Claims (12)

A display comprising: a screen having a front side and a back side and a first side for displaying an image; a first light emitting element disposed on the back side corresponding to 1/3 of the first side And a second illuminating element disposed on the back surface corresponding to the second side of the first side; wherein, the light emitting direction of the first illuminating element and the second illuminating element is the direction of the front side of the screen toward the back side . The display of claim 1, wherein the first side is a horizontal side of the screen. The display of claim 1, wherein the first illuminating element and the second illuminating element are strip light sources, and the long axis of at least one of the first illuminating element and the second illuminating element is substantially perpendicular On the first side. The display device of claim 1, wherein the first light-emitting element and the second light-emitting element are strip-shaped light sources, and a long axis of at least one of the first light-emitting element and the second light-emitting element is inclined to the first One side. The display of claim 1, further comprising: A bracket is disposed on the back surface; wherein the first light emitting element and the second light emitting element are respectively disposed adjacent to opposite sides of the bracket. The display of claim 1, further comprising: a third illuminating element disposed on the back surface, and the long axis of the third illuminating element is substantially parallel to the first side. The display device of claim 1, wherein the first light-emitting element and the second light-emitting element are point light sources, the display comprises: a plurality of the first light-emitting elements arranged in a strip shape; and the plurality of The second light-emitting elements are arranged in a strip shape. The display of claim 1, wherein the light-emitting angle of at least one of the first light-emitting element and the second light-emitting element is adjustable. The display device of claim 8, wherein the first light-emitting element comprises: a light-transmitting tube having an end surface; a rotating shaft rotatably disposed in the light-transmitting tube, one end of the rotating shaft protruding from the An end surface; and a light emitting element disposed on the rotating shaft. The display device of claim 8, wherein the first light-emitting element comprises: a light-transmitting tube having an end surface; a light-emitting element disposed in the light-transmitting tube; and a reflector rotatably disposed In the light-transmitting tube, one end of the reflector protrudes from the end surface. The display device of claim 1, further comprising: a signal output port; the first light-emitting element and the second light-emitting element are electrically connected to a host through the signal output port. An illumination control method for the display according to the first aspect of the invention, comprising: loading an application; determining whether there is a lighting parameter corresponding to the application; if the lighting parameter is present, reading the corresponding application a light-emitting parameter and controlling the first light-emitting element and the second light-emitting element of the display to emit light according to the light-emitting parameter; and if there is no such light-emitting parameter, recording dimming information made to the application when the application is turned on, Take this as a luminescence parameter.