# US 9,753,313 B2 · Electronic device and method for displaying on transparent screen > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,753,313 B2 - Document ID: US9753313B2 - Status: Granted - Kind: B2 - Application number: 13/834,769 - Filed: 2013-03-15 - Published: 2013-12-19 - Granted: 2017-09-05 - Earliest claimed: 2012-03-26 - Assignees: Beijing Lenovo Software Ltd.; Lenovo (Beijing) Limited - Applicants: Beijing Lenovo Software Ltd.; Lenovo (Beijing) Limited - Inventors: Junfeng Liu - Web page: https://patentgrep.com/patent/US9753313B2 ## CPC - G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)} - G02F 1/1334: based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals - G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side} - G02F 1/13476: {in which at least one liquid crystal cell or layer assumes a scattering state} - G02F 1/133342: {for double-sided displays} - G02F 2201/44: Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract Electronic devices and methods for displaying on a transparent screen are disclosed. The electronic device includes: a display unit having a first side and a second side and configured to display an image; a first adjusting unit provided on the first or second side of the display unit and is configured to switch from a first state to a second state. The first adjusting unit has a first transmittance in the first state and a second transmittance in the second state. The first transmittance is different from the second transmittance. ## Claims ### Claim 1 An electronic device, comprising: a display unit having a first side and a second side and configured to display an image, wherein the first side and the second side are opposite, and the display unit has a transmittance higher than a predetermined transmittance in a first direction and a second direction, the first direction being a direction from the first side to the second side, and the second direction being a direction from the second side to the first side; a first adjusting unit provided on any one of the first and second side of the display unit and configured to switch from a first state to a second state, wherein the first adjusting unit has a first transmittance in the first state and a second transmittance in the second state, the first transmittance being different from the second transmittance; and a second adjusting unit provided on a side of the display unit which is opposite to the side on which the first adjusting unit is provided, and configured to switch from a third state to a fourth state, wherein the second adjusting unit has a third transmittance in the third state and a fourth transmittance in the fourth state, the third transmittance being different from the fourth transmittance. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the first adjusting unit is configured to adjust its transmittance in accordance with first received switch command information. ### Claim 3 (depends on 2) The electronic device of claim 2, wherein the first adjusting unit is configured to adjust its transmittance by adjusting arrangement of liquid crystal cells; or the first adjusting unit comprises a controller array, and is configured to adjust its transmittance by adjusting on/off state of each sub-controller in the controller array. ### Claim 4 (depends on 3) The electronic device of claim 3, wherein the electronic device has at least one of the following operation modes: a first operation mode in which the first transmittance is higher than the predetermined transmittance; and a second operation mode in which the second transmittance is lower than the predetermined transmittance. ### Claim 5 (depends on 2) The electronic device of claim 2, further comprising: a first detecting unit configured to detect whether the electronic device satisfies a first predetermined condition; and a first processing unit configured to generate the first switch command information when the first predetermined condition is satisfied, such that the electronic device is switched from the first operation mode to the second operation mode or from the second operation mode to the first operation mode, in accordance with the first switch command information. ### Claim 6 (depends on 5) The electronic device of claim 5, wherein the first detecting unit is an input unit configured to detect whether there is predetermined input information; the first detecting unit is a luminance acquiring unit configured to detect whether a spatial ambient luminance satisfies a predetermined luminance condition; the first detecting unit is a spatial location sensor configured to detect whether a spatial location satisfies a predetermined spatial location condition; the first detecting unit is an image capturing unit provided on a side toward the first adjusting unit and configured to detect whether a predetermined image condition is satisfied; or the first detecting unit is a proximity detecting unit configured to detect whether a state of an object within a predetermined distance from the first adjusting unit satisfies a predetermined reference object condition. ### Claim 7 (depends on 5) The electronic device of claim 5, comprising: a first body comprising the electronic device; a second body connected with the first body via a rotation axis; wherein the first detecting unit detects whether location relation information of the first body and the second body satisfies the first predetermined condition, and when the first predetermined condition is satisfied, the first processing unit generates the first switch command information based on the location relation information and is switched from the first operation mode to the second operation mode or from the second operation mode to the first operation mode, in accordance with the first switch command information. ### Claim 8 (depends on 1) The electronic device of claim 1, wherein the electronic device has at least one of the following operation modes: a third operation mode in which the first adjusting unit has a fifth transmittance and the second adjusting unit has a sixth transmittance, the fifth transmittance and the sixth transmittance being higher than the predetermined transmittance; a fourth operation mode in which the first adjusting unit has a fifth transmittance and the second adjusting unit has a seventh transmittance, the fifth transmittance being higher than the predetermined transmittance, and the seventh transmittance being lower than the predetermined transmittance; and a fifth operation mode in which the first adjusting unit has an eighth transmittance and the second adjusting unit has a sixth transmittance, the eighth transmittance being lower than the predetermined transmittance, and the sixth transmittance being higher than the predetermined transmittance. ### Claim 9 (depends on 1) The electronic device of claim 1, further comprising: a second detecting unit configured to detect whether the electronic device satisfies a second predetermined condition; and a second processing unit configured to generate second switch command information when the second predetermined condition is satisfied, such that the electronic device is switched from one of the third, fourth and fifth operation modes to another one of the third, fourth and fifth operation modes in accordance with the second switch command information. ### Claim 10 (depends on 9) The electronic device of claim 9, comprising: a third body comprising the electronic device; a fourth body connected with the third body via a rotation axis; wherein the second detecting unit detects whether location relation information of the third body and the fourth body satisfies the second predetermined condition, and when the second predetermined condition is satisfied, the second processing unit generates the second switch command information based on the location relation information and is switched from one of the third, fourth and fifth operation modes to another one of the third, fourth and fifth operation modes in accordance with the second switch command information. ### Claim 11 (depends on 1) The electronic device of claim 1, further comprising: a light source provided on at least one side of the first adjusting unit and configured to emit light towards the first adjusting unit in a third direction to adjust a color of the first adjusting unit, wherein the third direction is different from both of the first direction and the second direction. ### Claim 12 (depends on 1) An apparatus which includes the electronic device of claim 1 and is capable of displaying on a transparent screen, comprising: a receiving unit configured to obtain first switch command information in a first state; and a switching unit configured to switch a first adjusting unit from the first state to a second state in accordance with the first switch command information. ### Claim 13 A method for displaying on a transparent screen in an electronic device comprising: a display unit having a first side and a second side and configured to display an image, wherein the first side and the second side are opposite, and the display unit has a transmittance higher than a predetermined transmittance in a first direction and a second direction, the first direction being a direction from the first side to the second side, and the second direction being a direction from the second side to the first side; a first adjusting unit provided on any one of the first and second side of the display unit and configured to switch from a first state to a second state, wherein the first adjusting unit has a first transmittance in the first state and a second transmittance in the second state, the first transmittance being different from the second transmittance; and a second adjusting unit provided on a side of the display unit which is opposite to the side on which the first adjusting unit is provided, and configured to switch from a third state to a fourth state, wherein the second adjusting unit has a third transmittance in the third state and a fourth transmittance in the fourth state, the third transmittance being different from the fourth transmittance, the method comprising: obtaining first switch command information in the first state; and switching the first adjusting unit from the first state to the second state in accordance with the first switch command information. ### Claim 14 (depends on 13) The method of claim 13, wherein the first switch command information instructs the first adjusting unit to adjust its transmittance by adjusting arrangement of liquid crystal cells; or the first adjusting unit comprises a controller array, and the first switch command information instructs the first adjusting unit to adjust its transmittance by adjusting on/off state of each sub-controller in the controller array, wherein the electronic device has at least one of the following operation modes: a first operation mode in which the first transmittance is higher than the predetermined transmittance; and a second operation mode in which the first transmittance is lower than the predetermined transmittance. ### Claim 15 (depends on 14) The method of claim 14, wherein obtaining first switch command information in the first state further comprises: detecting whether the electronic device satisfies a first predetermined condition; and generating the first switch command information when the first predetermined condition is satisfied, such that the electronic device is switched from the first operation mode to the second operation mode or from the second operation mode to the first operation mode, in accordance with the first switch command information. ### Claim 16 (depends on 15) The method of claim 15, wherein detecting whether the electronic device satisfies a first predetermined condition comprises: detecting whether there is predetermined input information; detecting whether a spatial ambient luminance satisfies a predetermined luminance condition; detecting whether a spatial location satisfies a predetermined spatial location condition; detecting whether a predetermined image condition is satisfied; or detecting whether a state of an object within a predetermined distance from the first adjusting unit satisfies a predetermined reference object condition. ### Claim 17 (depends on 13) The method of claim 13, the electronic device has at least one of the following operation modes: a third operation mode in which the first adjusting unit has a fifth transmittance and the second adjusting unit has a sixth transmittance, the fifth transmittance and the sixth transmittance being higher than the predetermined transmittance; a fourth operation mode in which the first adjusting unit has a fifth transmittance and the second adjusting unit has a seventh transmittance, the fifth transmittance being higher than the predetermined transmittance, and the seventh transmittance being lower than the predetermined transmittance; and a fifth operation mode in which the first adjusting unit has an eighth transmittance and the second adjusting unit has a sixth transmittance, the eighth transmittance being lower than the predetermined transmittance, and the sixth transmittance being higher than the predetermined transmittance, wherein the method further comprises: obtaining second switch command information in the third state; and switching the second adjusting unit from the third state to the fourth state in accordance with the second switch command information. ### Claim 18 (depends on 17) The method of claim 17, wherein obtaining second switch command information in the third state further comprises: detecting whether the electronic device satisfies a second predetermined condition; and generating second switch command information when the second predetermined condition is satisfied, such that the electronic device is switched from one of the third, fourth and fifth operation modes to another one of the third, fourth and fifth operation modes in accordance with the second switch command information.