TWI220356B - Power saving device applied to power saving backlight unit and power saving portable electronic device - Google Patents

Abstract

A power saving backlight unit is adapted to a portable electronic device with a primary and a secondary display panel. The secondary display panel is located back to back against the primary display panel and is installed in a first area of the primary display panel The backlight unit comprises a first and second illuminant device, in which portable electronic device simultaneously drives the first and second illuminant device to shine when the portable electronic device is in a transceiving state so as to provide light source to the first and second area of the primary display panel. When the portable electronic device is in idle state, the portable electronic device only drives the first illuminant device to shine so as to provide light source to the secondary display panel. Besides, use the display device of the said power saving backlight unit to disclose the portable electronic device as well.

Description

1220356 V. Description of the invention (l) [Technical field to which the invention belongs] The present invention relates to a backlight unit, and more particularly to a power-saving backlight unit that is inexpensive for two display panels. The unit ’s display device and portable electronic device are also unveiled at the same time. ^ $ 电 [The previous devices include the main display when the mobile phone ’s display is turned on. It will not cause the display surface to be charged, which makes the technology] 1 picture display has dual screens. Phone sketch. As shown in the figure, the hand: an upper cover 10 and a lower cover 12, a display panel 14 on the front of the upper cover 10, and a secondary display panel 16 on the back of the upper cover 10; in the standby state, the upper cover 10 and the lower cover丨 2 is closely attached, and the secondary board 1 6 ^ lights up to display time or caller ID; and when the hand is in a sad state, the primary display panel 丨 4 and the secondary display panel 丨 6 will both, but the user When using a mobile phone to call or set other functions, the secondary display panel 16 is used, but in general, when the mobile phone is used, the primary panel 14 and the secondary display panel 16 will be lit, resulting in the power consumption of the battery. fast. [Summary of the Invention] In view of this, the first-optical unit 1 of the present invention uses a control-mainly, power-supply-saving type to achieve the purpose of power saving. To commend the off state of the panel, the second purpose of the present invention is to use the above-mentioned backlight unit to make the upper, lower, and upper power-saving display devices to enable the power-saving display devices to have power-saving functions.

1220356 V. Description of the invention (2) The second invention B of the present invention is a power-saving portable type, which provides a light-only display surface with two display panels; ... when the portable electronic device is in a standby state, one dollar reaches The above first object, the present invention, is applicable to a primary electric type with 4 ^ 0 miles, and the secondary display panel is quite easy: ::; portable electronic equipment for the panel is required for the main display ί board :: up; set for display panel, light-emitting device, farmer, and secondary display panel; one second ^ ten μ; primary display panel does not overlap with secondary display panel-= ", use卩 Provide light source to the second area of the main display panel. When the portable electronic device is in a transmitting and receiving state, the portable electronic device drives the first and second light emitting devices to transmit light to provide light sources to the first and second areas of the main display panel; when When the portable electronic device is in a standby state, the portable electronic device only drives the first light-emitting device to emit light, and supplies the light source to the secondary display panel, thereby achieving the purpose of power saving. In order to achieve the above-mentioned second object, the present invention provides a power-saving display device suitable for a portable electronic device, including: a main display panel; a primary display panel, which is arranged back-to-back with the main display panel, and is disposed on the main On a first area of one of the display panels; a backlight unit including: a first light emitting device, which is disposed adjacent to the first area of the main display panel and the secondary display panel and is provided to provide a light source to the first area of the main display panel. And a secondary display panel; a second light emitting device adjacent to the primary display panel and

0685-9999TWf (nl); IAC030040; JOANNE.ptd Page 6 V. Description of the invention (3) One person wants to display the panel and display the second operating state of the panel. Wheel: Device. One of them is that when the first element of the display panel is driven at the same time, the processing order is given to the secondary display panel to reach the above-mentioned electronic device, including the main display panel; and the main element is provided, including: a first region and The first area of the secondary display surface and the secondary display panel were not activated with the secondary light source for the primary display portable electronic device. The first and second rounds of the primary display portable electronic device were activated. A second area; a processing corresponding drive is provided to provide a light source to the main unit to drive the first and second light-emitting portable electronic devices and the second light-emitting device to emit light and the first light-emitting device according to the signal of the portable electronic device; The second area; the yuan only drives the first, thereby achieving 0 in a portable light-emitting device transmitting and receiving state to provide electronic devices with light-emitting, the third purpose is: a device this time to show the purpose of power saving the present invention Provided is a body for displaying a panel, which is provided with a first light emitting device panel to display one of the panels; to display an operation state of the first display panel of the panel; On the main display area; with the main display light source for the main light device, two areas adjacent to the second area to provide a second round of overlap; and a processing and output corresponding drive when processing a single light source to the main location A standby to provide the light source electric type portable function; a panel back to back and a backlit single panel of the first primary display panel adjacent to the main unit, used to lift the unit, according to the signal, to drive the portable electronic device in a transceiver In the state, the processing unit and the second light emitting device emit light to provide a light source to the main second area; when the portable electronic device is in a standby state, the 'processing unit only drives the first light emitting device to tamp to provide a light source

1220356 V. Description of the invention (4) For the secondary display panel, || ^ You can achieve this to save power. = To make the above and other objects, features, and advantages of the present invention clearer

", Easy to understand, the following is a preferred example, and in accordance with the accompanying drawings, the detailed description is as follows: H [Embodiment] Figure 2 shows the first embodiment of the power-saving backlight unit of the present invention. As shown in the figure No, the moonlight unit 20 has a primary display panel 14 and a secondary display. The panel 16 'secondary display panel 6 and the main display panel 丨 4 are back to back, and are arranged above one of the main display panels 14 Including: a first light-emitting device A, corresponding to the first area of the primary display panel 14 and the secondary display panel 16, for providing a light source to the first area of the primary display panel 14 and the secondary display panel 16 The second light-emitting device B is provided corresponding to the second region R2 where the main display panel 14 does not overlap with the secondary display panel 16 and is used to provide a light source to the second region R2 of the main display panel 14. /,, secondary The display panel 16 can be placed in any area on the back of the main display panel 14. In the present invention, the secondary display panel 6 is located on the upper half of the back of the main display panel. When the user is using a power-saving backlight unit When driving the first round The light device A and the second light emitting device 6 emit light to provide a light source to the first region R1 and the second region R2 of the main display panel 14; at this time, an external device (not shown) sends a full dark signal to the secondary display Panel 16. When the field-saving power-saving backlight unit 20 is in a standby state, only the first light emitting unit 1 and the A light emitting unit are driven to provide a light source to the secondary display panel 6 to thereby achieve

1220356 V. Description of Invention (5) 'One' for the purpose of power saving. Wherein, when only the first light-emitting device A emits light, an external device (not shown) sends a full dark signal to the first region R1 of the main display panel 14 for the first region R1 of the main display panel 14 A black day surface is displayed. The first light-emitting device of the present invention is formed by connecting a plurality of main light-emitting diodes in series; the second light-emitting device is formed by connecting a plurality of light-emitting diodes in series; and it can be placed at any position of the backlight unit. In the embodiment, the first light-emitting device A and the second light-emitting device b are disposed on both sides of the main display panel; and FIG. 3 shows the second embodiment of the light-emitting device placement position of the present invention. As shown, the first light-emitting device A is disposed above the first region R1 of the main display panel 14, and the second light-emitting device B is disposed on both sides of the “second region” of the main display panel 14. FIG. 4 shows the present invention. The third embodiment of the light-emitting device placement position. As shown in the figure, the first light-emitting device A is disposed on both sides of the first region R1 of the main display panel 14, and the second light-emitting device B is disposed on the second of the main display panel 14 Below the region R 2. FIG. 5 shows a fourth embodiment of the light-emitting device placement position of the present invention. As shown in the figure, the first light-emitting device A is disposed above the first region R1 of the main display panel n, and the second light-emitting device B is disposed below the second area R 2 of the main display panel 14. Fig. 6 shows a block diagram of the backlight unit of the present invention applied to a display device. The power-saving display device of the present invention is suitable for a portable electronic device. The power-saving display device includes: a main display panel 14; the primary display panel 16 'and the main display panel 14 are back-to-back, and are arranged on the main display

0685-9999TWf (nl); IAC030040; JOANNE.ptd Page 9 1220356 V. Description of the invention (6) On the first area R1 of the panel 14; a backlight unit, including: a first light emitting device 64a, 64b, adjacent to the main The first region R1 and the secondary display panel 16 of the display panel 14 are provided to provide a light source to the first region R1 and the secondary display panel 16 of the primary display panel 14;-the second light emitting device 66 &, 66b, adjacent to The second area of the main display panel 14 that does not overlap with the secondary display panel 16 is provided to provide a light source to the second area R2 of the main display panel 14; a processing unit 62 is based on the operating state of the portable electronic device. Output corresponding driving signals to drive the first light-emitting device 64a, β4b and the second light-emitting device 66a, 66b. Wherein, when the portable electronic device is in a transmitting and receiving state, the processing unit 62 simultaneously drives the first light-emitting device. The devices 64a, 64b and the second light emitting devices 66a, 66b emit light to provide a light source to the first area of the main display panel 14 = the second area R2; when the portable electronic device is in a standby state, the processing unit 疋62 only drives the first light 64a, 64b are set to emit light, so as to provide a light source to the secondary display panel 16 ', thereby achieving the purpose of power saving. Moreover, when only the first light emitting devices 64a, 64b emit light, a processing unit 62 sends a full dark signal ( (Not shown) is given to the first area R1 of the main display panel 14 to display a black picture in the first area R1 of the main display panel 14. In addition, the display device further includes: a detection unit 60 for detecting The state of the portable electronic device; when the portable electronic device is switched from the standby state to the transmitting and receiving state, the detection unit 60 drives the processing unit 62 so that the first light emitting devices 64a, 64b and the second light emitting devices 66a, 66b are simultaneously When the mobile phone system is switched from the receiving / transmitting state to the standby state, the detecting unit 60 drives the processing unit 62 so that the first light emitting devices 64a and 64b are turned on.

0685 -9999TWf (η1); IAC030040; JOANNE.p td Page 10 1220356 V. Description of the invention (7) Electronics in a portable electronic device 4 'to save the portable electronic device as shown in Figure 1 , State, when it indicates that the mobile device is on the receiving and sending status, when the cover is 1, the mobile device is set by the receiving and sending status: standby status. Figure 6 shows a block diagram of the backlight unit inside the unit with power saving function. A Α electron wave control circuit diagram of the light emitting device. As shown in the figure, the -ΐ ΐ ί high voltage level Vcc and the emitter of the transistor Qi, the light ~ polar body is connected in series, the second light emitting device is connected to: the electrical μ level Vcc and the transistor Between the emitters of the body = body: then the place • into; when set to 6. Detect when the user lifts up "If the top cover of the portable electronic device is displayed, it means that the portable electrical device = the garment is switched from the standby state to the transmitting and receiving state, so the processing unit is driven so that the light device A and the first The two light-emitting devices β are turned on at the same time; when the cover a: i is closed, it means that the portable electronic device is switched from the receiving state to the standby state, and then the processing unit 62 is driven to make the first light-emitting device A light up. From the above, the present invention has the following advantages: Power-saving design: The power-saving backlight unit of the present invention can control the dot status of the main display panel and the secondary display panel. When the secondary display panel is not used , Then turn it off to save the consumption of the source. Second, the electric power is more durable. In the present invention, the electric power consumed by the unnecessary display panel is saved, so the electric power of the battery can be more durable. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to

1220356 V. Description of the invention (8) The invention is limited. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the invention. Therefore, the scope of protection of the invention shall be regarded as the attached application. The patent scope shall prevail.

0685-9999TWf (η1); IAC030040; JOANNE.p t d p.12 1220356 Schematic description of the figure Figure 1 shows a schematic diagram of a mobile phone with dual screens. FIG. 2 shows a first embodiment of a power-saving backlight unit according to the present invention. FIG. 3 shows a second embodiment of the light-emitting device placement position of the present invention. FIG. 4 shows a third embodiment of the light-emitting device placement position of the present invention. Fig. 5 shows a fourth embodiment of the light-emitting device placement position of the present invention. Fig. 6 is a block diagram showing the application of the backlight unit of the present invention to a display device. FIG. 7 shows a control circuit diagram of the light emitting device. [Symbol description] 10 ~ upper cover; 12 ~ lower cover; 1 ~ 4 ~ main display panel; 16 ~ secondary display panel; 20 ~ backlight unit; A, 64 ~ first light emitting device; B, 6 ~ 6 ~ second Light-emitting device; 6 0 ~ detection unit; 6 2 ~ processing unit.

0685-9999TWf (η1); IAC030040; JOANNE.p t d p. 13

Claims (1)

1 ^ 20356 VI. Patent application scope—1 · A power-saving backlight unit suitable for portable electronic devices with a primary and secondary panel, the secondary display panel is back-to-back with the above-mentioned primary display panel And provided on the first area of one of the above main display panels, including ... and the above-mentioned tasks: ί 光 装 f 'is provided corresponding to the eighth I display panel of the above-mentioned main display panel to provide a light source For the above main display panel, the first area and the above-mentioned secondary display panel; 'Secondary acquisition' should be set to 1 in the area where the above-mentioned main display panel is not in line with the above-mentioned main display panel to provide a light source to the portable I-ray mentioned above When the portable electronic device is in a transmitting and receiving state, it is glazed to drive the first and second light-emitting devices simultaneously with the device to emit light to the first and second areas of the main display panel; The KKY-type electronic device is in a standby state, and the above-mentioned secondary display panel can be used by: up to: to provide a light source to include -2 control Π: special: Κ: 1 the second item described power-saving backlight unit, more Bao Ju Free point only the first light-emitting device: the bad shape, while the second light emitting device. ^ 门 ^ Points above are the first and the third. As in the scope of the patent application, including the second category of a false mining method, the power-saving type backlight unit can be used for the early processing. According to the above control, 罝 -aa, As early as 70, it also packs portable electronic equipment detected by early 70. Page 14 0685-9999TWf (η1); IAC030040; JOANNE.ptd 6. The second light-emitting device in the state where the scope of patent application is located The driving signal corresponding to the wheel to drive the first and 4 above. The first light-emitting device by the patent application is composed of the light-emitting device by a plurality of five. '-Area and one of the above-mentioned secondary display panels. The above-mentioned secondary display shows the above-mentioned primary display in one place and the output is correspondingly set; wherein, when the processing unit is the same as the backlight unit described in item 1, wherein the plurality of primary The light emitting diodes are connected in series; the second light emitting diodes are connected in series. The electric display device is suitable for a portable electronic device, a display panel; a panel, which is back-to-back with the main display panel, and a first area of a display panel is provided; the element includes: a t-light device adjacent to the above The third display panel of the main display panel is provided to provide a light source to the primary first region and the secondary display panel; a light emitting device is provided adjacent to the second region where the primary display panel does not overlap with the panel, The second area of the panel is used to provide a light source; the processing unit is configured to drive the first and second light-emitting devices according to the driving signals of the operation state of the portable electronic device described above when the portable electronic device is in a transmitting and receiving state. When driving, the above first and second light emitting devices are driven to emit light, so as to improve I22〇356 / 、 The scope of the patent application is for the light source to the above main display panel ... When the above-mentioned portable electronic device is in the following state: The second dagger early driver only drives the above-mentioned first-generation 'standby state, the above process requires the display panel to be borrowed. This achieves the purpose of saving light, providing light sources to the above-mentioned ", electricity. 6. As the 1 test unit included in item 5 of the scope of the patent application, to detect the staff / jin: 'electric display device, including the state of the portable electronic device from the standby two-dollar electronic device; It is said that the rigid unit drives the above-mentioned processing. When the transmission and reception status is in the receiving and transmitting state, the upper device is lighted at the same time; when the above is portable; the first and second light-emitting devices are used to measure the above-mentioned processing unit. The upper, middle, upper; power-saving display device described in item 5 above, wherein the first light emitting device is connected by a plurality of main light-emitting diodes in series; the first device is a plurality of light-emitting diode strings Connected. Among them, t is the power-saving display device described in item 5 of the scope of the patent application. When the portable electronic device is in a standby state, the processing unit sends a full dark signal to the main display panel. 9. A power-saving type portable electronic device, comprising: a device body ’for performing related functions; a main display panel; The scope of the patent application is placed on the above main panel, back to back with the above main display panel, and the above-mentioned display panel is located on the -th-area; with * 九九 早 Wu, including:-area and upper light The device is arranged adjacent to the first display panel handle display panel of the main display panel, and is used to provide a light source to the primary display area and the secondary display panel; the secondary display is a light-emitting device. Adjacent to the main display panel that is not in the same area as the main display panel, and is used to provide the light source to the second area where the panel is to be displayed;疋, according to the operation status of the portable electronic device; ^ driving signals to drive the first and second light-emitting devices, the ^ I 丄 when the portable electronic device is in a receiving and transmitting state light, Connect: Zhizao Wu drives the first and second light-emitting devices simultaneously to the first and second areas of the main display panel; when the portable electronic device is in a standby state, the above-mentioned times To show -1Γ above - a light emitting device emits light, in order to provide light to the man that does not faceplate, thereby to achieve the purpose of energy saving. The power-saving type portable electronic device e% described in item 9 of the special / scope includes a control unit that receives the rotation number 4 from the processing unit, and decided to only use ancient μ, +, The drive from Songcong® is complex, and it is redundant with the above-mentioned first light-emitting device, or at the same time; ^ First-light and second light-emitting device. A bit redundant 6. Scope of patent application: The first power-saving portable electronic device described in item 1i./ item 9 of the patent scope is the first light-emitting device described above, which is composed of a plurality of main light-emitting diodes connected in series. 4 The second light-emitting device is composed of a plurality of light-emitting diodes connected in series and 1 2. If the scope of the patent application, ... ,, where, Hebu, Jinda power-saving type can shake type Lei Zao # 说 时 田 aforementioned portable The type of electronic inflammation should be inferior. The J 镌 type unjustly pretends to send a full dark signal to the upper 70 as early as when it is set to the standby state, the above-mentioned place 'L' requires a display panel. 0685 > 9999TWf (nl); IAC030040; JOANNE.ptd