TW202001370A - Display device - Google Patents

Abstract

A display device is provided. A vocal film is disposed above a light emitting surface of a display panel and vibrates according to a sound driving signal. An image compensation film is disposed between the display panel and the vocal film. A sensor unit is configured to sense the vibration state of the vocal film and provide a state signal correspondingly. A display manager is electrically coupled to the vocal film, the image compensation film and the sensor unit and receives a sound signal. The display manager is configured to drive the vocal film according to the sound signal and decide the image compensation film to operate in a first mode, a second mode or a third mode.

Description

Display device

The present invention relates to a display technology, and particularly to a display device having a speaker module.

With the advancement of technology, audiovisual entertainment devices have also become indispensable electronic products for consumers in daily life. In order to save space and the products are thinner and lighter, the existing technology can integrate the speaker device with the display device. However, the speaker device Setting on the frame or back of the display panel will reduce the visible area or increase the sound transmission path, causing some sound waves to be absorbed by the glass and resulting in poor sound quality. However, if the speaker device is placed on the front side of the display panel, although it can be improved The thin and light effect and increased aperture ratio will cause the penetrating film or cover plate provided on the front side of the panel to oscillate when the sound wave is transmitted, but it will cause the picture quality to deteriorate. Therefore, how to take into account the light and thin volume, the sound and the quality of the picture Providing the best audio-visual effects has become one of the problems of display devices with speaker effects.

Embodiments of the present invention provide a display device that can provide image compensation under the condition that the speaker device is disposed on the front side of the display panel to improve the picture impact caused by sound wave oscillation and provide good audio-visual effects.

An embodiment of the present invention provides a display device, including: a display panel, a sound emitting film, an image compensation film, a sensing unit, and a display manager. The sound-emitting film is disposed on the light-emitting surface of the display panel and vibrates according to the sound driving signal. The image compensation film is located between the display panel and the sound-emitting film. The sensing unit is used to sense the vibration state of the sounding film, and correspondingly provide a state signal. The display manager is electrically coupled to the sound-emitting film, the image compensation film and the sensing unit, and receives an audio signal to drive the sound-emitting film according to the sound signal, and determines whether the image compensation film operates in the first mode, the second mode, or according to the status signal The third model.

Based on the above, the display device of the embodiment of the present invention senses the vibration state of the sounding film through the sensing unit and provides a status signal to the display manager. The display manager controls the image compensation film according to the status signal to perform image compensation and determine the image The compensation film operates in the first mode, the second mode, or the third mode, so the influence of the vibration generated by the speaker device on the quality of the display screen can be reduced.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

FIG. 1 is a block diagram of a display device according to an embodiment of the invention, and FIG. 2 is a side view of the display device according to an embodiment of the invention. 1 and 2 together, the display device 100 includes a display panel 110, a display manager 120, a sensing unit 130, an image compensation film 140, and a sound-emitting film 150. The sound emitting film 150 is disposed on the light emitting surface OS of the display panel 110 and vibrates according to the sound driving signal SP to emit sound. The image compensation film 140 is located between the display panel 110 and the sound-emitting film 150.

The sensing unit 130 is used to sense the vibration state of the sounding film 150 and correspondingly provide a state signal ST to the display manager 120. The display manager 120 is electrically coupled to the sound-generating film 150, the image compensation film 140, and the sensing unit 130, and receives the sound signal AC to drive the sound-generating film 150 according to the sound signal AC, that is, to provide the sound driving signal SP to make the sound-generating film 150 A sound corresponding to the sound signal AC is emitted. At the same time, the display manager 120 determines whether the image compensation film 140 operates in the first mode, the second mode, or the third mode according to the state signal ST. In the first mode, the vibration state of the image compensation film 140 is reversed to that of the sound-generating film 150 In the second mode, the vibration state of the image compensation film 140 is the same as the vibration state of the sounding film 150, and in the third mode, the image compensation film 140 remains stationary.

The display panel 110 is, for example, a liquid crystal display (Liquid Crystal Display; LCD), a light-emitting diode (LED) display panel, an organic light-emitting diode (Organic Light-Emitting Diode; OLED) display panel, a plasma Plasma Display Panel (PDP), Field Emission Display (FED) or other types of display panels.

In detail, taking a liquid crystal display panel as an example, the display panel 110 has a light-emitting surface OS and a light-incident surface IS, and a backlight module (not shown) provides an illumination beam LB with sufficient and uniform brightness to enter the display panel 110 The light-incident surface IS enables the display panel 110 to display the image IB, where the image IB is emitted from the light-emitting surface OS for viewing by the user.

In some embodiments, the display manager 120 may be a software program stored in a computer-readable medium, such as a hard disk drive, a solid state drive, or the like. Before the display manager 120 is executed, it is loaded into memory for execution by hardware devices with computing capabilities such as a central processing unit (CPU), a microprocessor (Microprocessor), or the like. Alternatively, the display manager 120 may be accessed by a hardware device such as an application specific integrated circuits (ASIC) or a programmable logic device (PLD). Then, the display manager 120 performs the image compensation or enhancement operation of the display device 100.

The sensing unit 130 includes at least one of an accelerometer and a scaler. Further, the sensing unit 130 may include an accelerometer, a scaler, a gyroscope, a proximity sensor, a camera element, and a global positioning system (Global Positioning System) Positioning System (GPS), etc., but the embodiment of the present invention is not limited to this. The vibration state of the sounding film 150 sensed by the sensing unit 130 is, for example, the vibration frequency, vibration amplitude, loudness, or vibration displacement of the sounding film 150, so the display manager 120 can determine the frequency, amplitude, and At least one of the loudness.

In this embodiment, the image compensation film 140 and the light emitting surface OS have a spacer 112 to form a gap between the image compensation film 140 and the light emitting surface OS. In addition, there is also a gap between the image compensation film 140 and the sound emitting film 150. The above-mentioned gap is, for example, an air layer or a gap layer formed by a filler, which is not limited herein. The display device 100 further includes at least one first actuator 170 electrically coupled between the display manager 120 and the sound-emitting film 150 to drive the sound-emitting film 150 to emit sound with the sound driving signal SP provided by the display manager 120 . In addition, the display device 100 further includes at least one second actuator 160 electrically coupled between the display manager 120 and the image compensation film 140 to be controlled by the display manager 120 to drive the image compensation film 140.

FIG. 3 is a schematic diagram of an image compensation film according to an embodiment of the invention. 1 and 3, the image compensation film 140 covers the display panel 110 and has a plurality of non-overlapping diaphragms 142, and each diaphragm 142 corresponds to a plurality of pixels of the display panel 110 (eg, pixel R, pixel G, Pixel B) One of them. The actuator/receiver 310 is arranged corresponding to the black matrix BM of the display panel 110, for example, arranged in the area of the black matrix BM, or arranged directly above or below the black matrix BM to avoid affecting the image IB. The actuator/sensor 310 may be at least one of the second actuator 160, the accelerometer, and the scaler, that is, the second actuator 160 may be configured corresponding to the black matrix BM of the display panel 110, but the present The embodiments of the invention are not limited.

FIG. 4 is a schematic diagram of the configuration of a sound-emitting film according to an embodiment of the invention. Please refer to FIGS. 1 and 4. In this embodiment, the sound-generating film 150 is, for example, a film covering the display panel 110. The actuator/receiver 410 is configured to correspond to the black matrix BM of the display panel 110. In other embodiments, the actuator/receiver 410 may also be configured to correspond to the fan out area. The actuator/sensor 410 may be at least one of the first actuator 170, the accelerometer, and the amplitude measurer, but the embodiment of the present invention is not limited thereto. That is, the first actuator 170 is configured corresponding to the black matrix BM and/or the fan-out area of the display panel 110.

In another embodiment, the sound-emitting film 150 may not be a film covering the display panel 110, but has a plurality of non-overlapping films, and each of the non-overlapping films corresponds to one of the pixels of the display panel 110. One, the structure diagram is similar to FIG. 3, for example, the arrangement of the diaphragms of the sound-emitting film 150 is shown as the diaphragm 142 in FIG. 3, and the actuator/sensor 410 is configured corresponding to the black matrix BM of the display panel 110 That is, the first actuator 170 may be configured corresponding to the black matrix BM of the display panel 110, which is similar to the actuator/sensor 310 shown in FIG. The description will not be repeated here.

FIG. 5 is a flowchart of the operation method of the display device according to an embodiment of the present invention. The operation method of FIG. 5 is applicable to the display device 100 of FIGS. 1 and 2. The following is a detailed description of the implementation in conjunction with various elements in the display device 100 An example of the operation method of the display device.

In step S510, the display manager 120 receives the sound signal AC and controls the first actuator 170 according to the sound signal AC to drive the sound emitting film 150 to emit sound. In step S520, the sensing unit 130 senses the vibration state of the sounding film 150, and correspondingly provides a state signal ST.

In step S530, the display manager 120 (or the processor executing the display manager 120) receives the status signal ST from the sensing unit 130, and then determines at least the frequency, amplitude, and loudness of the sounding film 150 according to the status signal ST One, and a vibration index VI is determined according to at least one of the determined frequency, amplitude, and loudness of the sound generating film 150, and the vibration index VI indicates, for example, the vibration range of the sound generating film 150. Among them, a state detection unit (such as specific software or hardware) can be configured in the display manager 120 to determine the state (ie, vibration range) of the sounding film 150.

In step S540, the display manager 120 determines whether the image compensation film 140 operates in the first mode, the second mode, or the third mode according to the vibration index VI. In the first mode, the display manager 120 can determine the compensation data according to the vibration range of the sounding film 150 (that is, the vibration index VI), and the compensation data is provided to the second actuator 16 of the image compensation film 140 to adjust the display To complete the compensation of the screen of the display panel 110. The display manager 120 can be configured with a calibration unit (such as specific software or hardware) to perform the actions in the first mode.

In the second mode, the display manager 120 determines the amplification data according to the vibration range of the sounding film 150 (that is, the vibration index VI), and the amplification data is provided to the second actuator 16 of the image compensation film 140 to adjust the displayed Picture, thereby completing the enhancement of the picture of the display panel 110. The display manager 120 can be configured with an amplifier unit (such as specific software or hardware) to perform the actions in the second mode.

Specifically, the display manager 120 compares the vibration index VI with the first threshold T1 and the second threshold T2 to determine the operation mode of the image compensation film 140. Here, the first threshold T1 and the second threshold T2 are the ratio of the vibration range to the screen size of the display panel 110, but the invention is not limited thereto.

For example, the first threshold T1 may be 1%. When the vibration range indicated by the vibration index VI is less than or equal to 1% of the display screen, that is, when the vibration index VI is less than or equal to the first threshold T1, for the user, The screen vibration can be ignored, so the display manager 120 executes step S550 to determine that the image compensation film 140 operates in the third mode, that is, the display manager 120 does not actuate the second actuator 160, the image compensation film 140 remains stationary, and no image compensation is performed. .

When the vibration index VI is between the first threshold T1 and the second threshold T2, the second threshold T2 is, for example, 10%, that is, when the vibration range is less than 10% but greater than 1% of the display screen, the user That is to say, the screen vibration affects the viewing quality, so the display manager 120 executes step S560, and the display manager 120 determines that the image compensation film 140 operates in the first mode for image compensation.

In the first mode, the display manager 120 can calculate the predicted vibration value of the sounding film 150 at the next time point according to the state signal ST to determine the compensation data, or determine the compensation data according to the state signal ST and the sound signal AC, The invention does not limit the calculation method of compensation data. The display manager 120 actuates the second actuator 160 according to the compensation data so that the vibration state of the image compensation film 140 is reversed to that of the sound-generating film 150, and the image IB is generated after passing through the vibrating sound-generating film 15 through the principle of interference The offset is compensated by the anti-vibration image compensation film 140.

When the vibration index VI is greater than or equal to the second threshold T2, for example, the vibration range is greater than 10% of the display screen, for the user, the screen vibration is very strong at this time, indicating that the display screen may be a very intense or shocking scene, such as an explosion, The strong audio and video scenes during rollover, car accident, or magnification of video games are performed. Therefore, the display manager 120 executes step S570 to determine that the image compensation film 140 operates in the second mode for audio and video enhancement. After the display manager 120 calculates the compensation data according to the state signal ST or the sound signal AC, or at least the above two, the display manager 120 actuates the second actuator 160 so that the vibration state of the image compensation film 140 is in phase with the sounding film 150 To enhance the shock intensity of video and audio.

In another embodiment, when the vibration index VI is greater than the second threshold T2, the display manager 120 may choose to execute step S580 to determine that the image compensation film 140 operates in the third mode, at which time the image compensation film 140 remains stationary and does not Perform image compensation. Wherein, when the vibration index VI is greater than or equal to the second threshold T2, step S570 or S580 can be executed according to the user's setting (ie, the default value) or external display information.

In other words, the display manager 120 may further receive an external display information, which includes extended display identification data (EDID) and/or includes a movie type, such as a horror movie, action movie, or love Films and so on. The display manager 120 determines whether the image compensation film 140 operates in the first mode, the second mode, or the third mode according to the status signal ST and external display information.

6A is a block diagram of a display device according to another embodiment of the invention, and FIG. 6B is a side view of the display device according to another embodiment of the invention. 6A and 6B, the structure of the display device 100' is substantially similar to the above-mentioned display device 100, the difference is that the display device 100' further includes an auxiliary sound-emitting film 152. The auxiliary sound-emitting film 152 is disposed on the light incident surface IS of the display panel 110, that is, the auxiliary sound-emitting film 152 is disposed on the other side of the display panel 110 relative to the sound-emitting film 150, but the present invention does not provide This is limited, in other embodiments, the auxiliary sound-emitting film 152 may also be on the side of the display panel 110 or beside the sound-emitting film 150.

The auxiliary sound-emitting film 152 is electrically coupled to the display manager 120 to be driven in synchronization with the sound-emitting film 150. For example, the sound emitting film 150 is a front speaker or a tweeter, and the auxiliary sound emitting film 152 is a rear speaker or a subwoofer, which is not limited thereto.

The display device 100' further includes a plurality of third actuators 172 electrically coupled between the display manager 120 and the auxiliary sound-emitting film 152 to control the display manager 120 to drive the auxiliary sound-emitting film 152 to emit sound. For the specific implementation and configuration relationship of the display device 100', reference may be made to the teachings in the foregoing embodiments, and details are not described herein again.

In summary, the display device of the embodiment of the present invention has a sound-emitting film disposed on the light-emitting surface of the display panel, an image compensation film disposed between the display panel and the sound-emitting film, and a sensor for sensing the vibration state of the sound-emitting film Unit and display manager. The display manager determines whether the image compensation film operates in the first mode, the second mode, or the third mode according to the state signal provided by the sensing unit, wherein in the first mode, the vibration state of the image compensation film is reversed to that of the sound-emitting film In the second mode, the vibration state of the image compensation film is in phase with the vibration state of the sounding film, and in the third mode, the image compensation film remains stationary. Therefore, it is possible to solve the interference of the display screen caused by the sound-emitting film being arranged in front of the display panel, improve the quality of the audio-visual viewing, and even further enhance the audio-visual shock effect.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

100', 100‧‧‧ display device 110‧‧‧ display panel 120‧‧‧ display manager 130‧‧‧sensing unit 140‧‧‧ image compensation film 150‧‧‧sound film 152‧‧‧ auxiliary sound film 160 ‧‧‧ Second actuator 170‧‧‧ First actuator 172‧‧‧ Third actuator 310, 410‧‧‧Actuator/sensor AC‧‧‧Sound signal BM‧‧‧Black Matrix IB‧‧‧Image IS‧‧‧Incoming surface LB‧‧‧Light beam OS‧‧‧Emitting surface ST‧‧‧ Status signal SP‧‧‧Voice drive signal VI‧‧‧Vibration index S510~S580‧‧‧ step

FIG. 1 is a block diagram of a display device according to an embodiment of the invention. 2 is a side view of a display device according to an embodiment of the invention. FIG. 3 is a schematic diagram of an image compensation mode according to an embodiment of the invention. FIG. 4 is a schematic diagram of the configuration of a sound-emitting film according to an embodiment of the invention. 5 is a flowchart of an operation method of a display device according to an embodiment of the invention. 6A is a block diagram of a display device according to another embodiment of the invention. 6B is a side view of a display device according to another embodiment of the invention.

100‧‧‧Display device

110‧‧‧Display panel

120‧‧‧ Display Manager

130‧‧‧sensing unit

140‧‧‧Image compensation film

150‧‧‧ Sounding film

160‧‧‧Second actuator

170‧‧‧ First actuator

AC‧‧‧Sound signal

SP‧‧‧Sound drive signal

ST‧‧‧ status signal

Claims (19)

A display device includes: a display panel; a sound-emitting film, which is disposed on a light-emitting surface of the display panel and vibrates according to a sound driving signal; an image compensation film, located between the display panel and the sound-emitting film; a sense A measuring unit for sensing the vibration state of the sound-emitting film and correspondingly providing a state signal; and a display manager electrically coupled to the sound-emitting film, the image compensation film and the sensing unit, and receiving a sound The signal is used to drive the sound-emitting film according to the sound signal, and determine whether the image compensation film operates in a first mode, a second mode, or a third mode according to the status signal. The display device according to item 1 of the patent application scope, wherein the display manager determines at least one of a frequency, an amplitude, and a loudness of the sound-emitting film according to the status signal, and according to the determined At least one of the frequency, the amplitude, and the loudness determines a vibration index to determine whether the image compensation film operates in the first mode, the second mode, or the third mode according to the vibration index. The display device according to item 2 of the patent application scope, wherein when the vibration index is between a first threshold and a second threshold, the display manager determines that the image compensation film operates in the first mode, the vibration When the indicator is less than or equal to the first threshold or greater than or equal to the second threshold, the display manager determines that the image compensation film operates in the third mode. The display device according to item 2 of the patent application scope, wherein when the vibration index is less than or equal to a first threshold, the display manager determines that the image compensation film operates in the third mode, and when the vibration index is located at a first Between the threshold and a second threshold, the display manager determines that the image compensation film operates in the first mode, and when the vibration index is greater than or equal to the second threshold, the display manager determines that the image compensation film operates in the The second model. The display device as described in item 1 of the patent application scope further includes a plurality of first actuators electrically coupled between the display manager and the sound-emitting film to control the display manager to drive the sound-emitting device membrane. The display device as described in item 5 of the patent application scope, wherein the sound-emitting film is a diaphragm covering the display panel. The display device according to item 6 of the patent application scope, wherein the first actuators are arranged corresponding to a black matrix or a fan-out area of the display panel. The display device as described in item 5 of the patent application range, wherein the sound-emitting film covers the display panel and has a plurality of non-overlapping diaphragms, and each of the diaphragms corresponds to one of the pixels of the display panel. The display device as described in item 8 of the patent application range, wherein the first actuators are arranged corresponding to a black matrix of the display panel. The display device as described in item 1 of the patent application scope further includes a plurality of second actuators electrically coupled between the display manager and the image compensation film to be controlled by the display manager to drive the Image compensation film. The display device as described in item 10 of the patent application range, wherein the image compensation film covers the display panel and has a plurality of non-overlapping films, and each of the films corresponds to one of the pixels of the display panel . The display device as described in item 11 of the patent application range, wherein the second actuators are arranged corresponding to a black matrix of the display panel. The display device as described in item 1 of the patent application scope further includes an auxiliary sound-emitting film, which is disposed on a light-incident surface of the display panel, and is electrically coupled to the display manager to be driven in synchronization with the sound-emitting film. The display device as described in item 13 of the patent application scope further includes a plurality of third actuators electrically coupled between the display manager and the auxiliary sounding film to control the display manager to drive the Auxiliary sound film. The display device according to item 1 of the patent application scope, wherein the sensing unit includes at least one of an accelerometer and an amplitude measurer. The display device as described in item 1 of the patent application scope, wherein the display manager further receives an external display information, the display manager determines that the image compensation film operates in the first mode according to the status signal and the external display information, The second mode or the third mode. The display device as described in item 16 of the patent application scope, wherein the external display information includes an extended display identification data (EDID). The display device according to item 16 of the patent application scope, wherein the external display information includes a movie type. The display device according to item 1 of the patent application scope, wherein in the first mode, the vibration state of the image compensation film is reversed to that of the sound-emitting film, and in the second mode, the image compensation film The vibration state of is in phase with the vibration state of the sounding film, and in the third mode, the image compensation film remains still.

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